Websites which offers web analytics services are:
Google Analytics, Sentiment Metrics, Compete, Clicktale,WebTrends, eLogic, Statcounter, Shinystats
Web Analytics Glossary of Terms
Here is an excerpt from webtrends.com glossary of terms to better understand web analytics:
Acquisition: The
process of gaining customers through the means of different marketing
strategies. For the purposes of web analytics, it often refers specifically to the process of attracting visitors to a web site.
Ad Click: A click on an advertisement on a website which takes a user to another site.
Algorithm: A mathematical
formula used by search engines to determine which web sites in their
database to present in search results, in which order. While search
engine algorithms change regularly, primary on-page factors include
keyword density and source code optimization. The primary off-page
factor is link popularity.
Ad Click: A click on an advertisement on a website which takes a user to another site.
Bounce Rate: The percentage of entrances on a web page that result in an immediate exit from the web site.
Conversion: An action that signifies a completion of a specified activity.
Conversion Rate: The
relationship between visitors to a web site and actions considered to be
a "conversion," such as a sale or request to receive more information.
This metric is often expressed as a percentage.
Crawler/Spider/Robot:
Component of search engine that indexes web sites automatically. A
search engine’s crawler (also called a spider or robot), copies web page
source code into its index database and follows links to other web
pages.
Spider: An automated software program that gathers pages from the Internet.
Traffic: On the web, traffic refers to the amount of data sent and received by visitors to a website.
User Session:
A period of activity (all hits) for one user of a website. A unique
user is determined by the IP address or cookie. Typically, a user
session is terminated when a user is inactive for more than 30 minutes.
Visit:
A visit is an interaction a unique visitor has with a website over a
specified period of time or activity. In most cases, if a visitor has
left a site or has not executed a click within 30 minutes, the visit
session will terminate.
Visitor Session: Interaction by a site visitor. The session ends when the visitor leaves the site.
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