The success of sites embodying AJAX has driven a need to change the way websites are measured. Generally, most sites are measured by “page views” or how many pages are viewed on a site. If you were to read 5 blog entries on TMCnet this week your views would be counted towards TMCnet’s page view number.
As more sites embody AJAX and video, there is no need for a page to refresh and as such a person could spend many minutes on a website and only view a single page. So the current system favors sites which refresh often such as a Google or Yahoo.
PC World reports that Nielsen/NetRatings will start measuring total time spent on a site as their primary metric and page views will be secondary.
"It is not that page views are irrelevant now, but they are a less accurate gauge of total site traffic and engagement," Scott Ross, director of product marketing at Nielsen/NetRatings said. "Total minutes is the most accurate gauge to compare between two sites. If [Web] 1.0 is full page refreshes for content, Web 2.0 is, 'How do I minimize page views and deliver content more seamlessly?'"
The biggest drawback to Web 2.0 sites is the fact they cannot display ads properly. Why? Generally, new ads are introduced to a page when it refreshes. If you don’t refresh the page how can you show new ads? Well in reality, new ads will likely show up every X seconds on AJAX and video sites. But until consumers and the advertising community get comfortable with this change there will be lost ad revenue on Web 2.0 sites.
Technorati
Del.icio.us
Slashdot
Digg
twitter
if rating is done by calculating the total time spent by the user then it will be a bit tough for novice bloggers,they will have produce excellent content for expert bloggers like tom keating its not a problem.
http://unlimitedfreecalls.blogspot.com