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15.3 Tracking and Collecting Data
- Understand why tracking and data collection are important to eMarketing.
Log-file analysis software reads the records, called log filesText files created on the server each time a click takes place, capturing all activity on the Web site., on the Web server, which record all clicks that take place on the server. Web servers have always stored all the clicks that take place in a log file, so the software interprets data that have always been available. A new line is written in a log file with each new request. For example, clicking on a link, an Ajax call, or submitting a form will each result in a new line being written.
Pixel tracking can be used to track e-mail campaigns. Here, a tiny, transparent pixel is placed in the e-mail. When you load the images in the e-mail, you will also load the tiny image that tracks your activity.
In terms of log-file analysis, you should know the following:
- Log files are normally produced by Web servers, so the raw data are readily available. Page tagging, however, requires changes to the Web site.
- Log files are in a standard format, so it is possible to switch vendors and still be able to analyze historical data. Page tagging is proprietary to each vendor, so switching can mean losing historical data.
- Log files record visits from search engine spiders—useful for search engine optimization.
- Log files record failed requests, whereas page tagging only shows successful requests.
In terms of page tagging, you should know the following:
- Page tagging can report on events, such as interactions with a Flash movie, that log-file analysis cannot.
- Page tagging can be used by companies that do not run their own Web servers.
- Page tagging service providers usually offer a greater level of support. This is because it is a third-party service, whereas log-file analysis software is often managed in-house.
Because of the different methods of collecting data, the raw figures produced by the two services will differ. Sometimes, both are used to analyze a Web site. However, raw figures not matching up should not be a problem. It is through interpreting these figures that you will be able to understand how effective your eMarketing efforts are.
Web site analytics packages can be used to measure most, if not all, eMarketing campaigns. Web site analysis should always account for the various campaigns being run. For example, generating high traffic volumes by employing various eMarketing tactics like SEO (search engine optimization), PPC (pay per click), and e-mail marketing can prove to be a pointless and costly exercise if the visitors are leaving your site without achieving one (or more) of your Web site’s goals. Conversion optimization aims to convert as many of a Web site’s visitors as possible into active customers.
What Information Is Captured
There are three types of Web analytics metrics:
- CountRaw figures captured for analysis; these are the most basic Web analytics metric.. These are the raw figures captured that will be used for analysis.
- RatioAn interpretation of data captured, a ratio can be between counts, ratios, or a ratio and a count metric.. This is an interpretation of the data that are counted.
- KPI (key performance indicator). Either a count or a ratio, these are the figures that help you to determine your success in reaching your goals.
Why would you want to look at the activity of a single visitor? Why would you want to segment the traffic for analysis?
In analysis, metrics can be applied to three different universes:
- Aggregate. All traffic to the Web site for a defined period of time.
- Segmented. A subset of all traffic according to a specific filter, such as by campaign (PPC) or visitor type (new visitor vs. returning visitor).
- Individual. The activity of a single visitor for a defined period of time.
Building Block Terms
Here are some of the key metrics you will need to get started on Web site analytics:
- HitEvery request to the server is recorded as a hit, mistakenly used in Web analytics as an indication of a successful Web site.. A request to the server (and a fairly meaningless number on its own).
- Page. Unit of content (so downloads and Flash files can be defined as a page).
- Page views. The number of times a page was successfully requested.
- Visit or session. An interaction by an individual with a Web site consisting of one or more page views within a specified period of time.
Unique visitors. The number of individual people visiting the Web site one or more times within a period of time. Each individual is only counted once. Types of visitors can be categorized as follows:
- New visitor. A unique visitor who visits the Web site for the first time ever in the period of time being analyzed.
- Repeat visitor. A unique visitor with two or more visits within the time period being analyzed.
- Return visitor. A unique visitor who is not a new visitor.
A repeat visitor may be either a new visitor or a return visitor, depending on the number of times he or she has visited the site within the time period being analyzed.
These are the most basic Web metrics. They tell you how much traffic your Web site is receiving. Looking at repeat and returning visitors can tell you about how your Web site creates loyalty. As well as growing overall visitor numbers, a Web site needs to grow the number of visitors who come back. An exception might be a support Web site—repeat visitors could indicate that the Web site has not been successful in solving the visitor’s problem. Each Web site needs to be analyzed based on its purpose.
The following help characterize the visit to a particular Web site:
- Entry page. The first page of a visit.
- Landing page. The page intended to identify the beginning of the user experience resulting from a defined marketing effort.
- Exit page. The last page of a visit.
- Visit duration. The length of time in a session.
ReferrerThe URL that originally generated the request for the current page.. The URL (uniform resource locator) that originally generated the request for the current page.
- Internal referrer. A URL that is part of the same Web site.
- External referrer. A URL that is outside of the Web site.
- Search referrer. The URL has been generated by a search function.
- Visit referrer. The URL that originated a particular visit.
- Original referrer. The URL that sent a new visitor to the Web site.
- Click-through. The number of times a link was clicked by a visitor.
- Click-through rate. The number of times a link was clicked divided by the number of times it was seen (impressions).
- Page views per visit. The number of page views in a reporting period divided by the number of visits in that same period.
These are the terms that tell you how visitors reach your Web site and how they move through the Web site. The way that a visitor navigates a Web site is called a click path. Looking at the referrers, both internal and internal, allows you to gauge a click path that visitors take.
The following help characterize how visitors move through the Web site:
- Page exit ratio. Number of exits from a page divided by total number of page views of that page.
- Single-page visits. Visits that consist of one page, even if that page was viewed a number of times.
- Bounces (single page-view visits). Visits consisting of a single page view.
- Bounce rate. Single page-view visits divided by entry pages.
When visitors view a page, they have two options: leave the Web site, or view another page on the Web site. These metrics tell you how visitors react to your content. Bounce rate can be one of the most important metrics that you measure! There are a few exceptions, but a high bounce rate usually means high dissatisfaction with a Web page.
Other metrics that apply to eMarketing tactics include the following:
- Event. A recorded action that has a specific time assigned to it by the browser or the server.
- Conversion. A visitor completing a target action.
- Impression. Each time an advertisement or a page is served.
- Open. Each e-mail that is deemed open. Usually if the images are loaded, an e-mail is considered open.
For the most up-to-date definitions, visit http://www.webanalyticsassociation.org to download the latest definitions in PDF (portable document format).
In order to test the success of your Web site, you need to remember the TAO of conversion optimization:
Using your goals and KPIs, you’ll know what metrics you will be tracking. You will then need to analyze these results and take appropriate actions. And the testing begins again!
- Web analytics packages come in two flavors: log-file analysis and page-tagging analysis, although some packages combine both methods.
Metrics use the following:
- KPIs (key performance indicators), which are either counts or ratios
- How can site search data be used to optimize a Web site?
- Why is “hit” a meaningless measure of Web site success?