SEO Glossary – V
Visibility means how well placed your website is in the search engines for a particular set of related keywords.
A search service which is focused on a particular field, a particular type of information, or a particular information format.
It refers to the time duration for which the user has been using the particular web page.
The number of user sessions on a site is used in measuring the amount of traffic a Web site gets. The site administrator determines what the time frame of a user session will be (e.g., 30 minutes). If the visitor comes back to the site within that time period, it is still considered one user session because any number of visits within that 30 minutes will only count as one session. If the visitor returns to the site after the allotted time period has expired, say an hour from the initial visit, then it is counted as a separate user session.