Traffic stats will tell you how many people have viewed your site each day, including the number of unique visits, total visits, the referring website, pages they viewed, and keywords users searched. Log in to Today.com. There is a "sign in" button on the top right of the header. Move to the "My Account" screen. Click "VIP Statistics" under "VIP Blogs." Click the second tab, which says "traffic stats." Change the type of report and the dates you want to view in the top window. For daily traffic, your report should be for "visits." Below you will see the number of unique visits, total visits, earnings, and the applicable promotion for each date. Click the "pages" link to see which pages on your blog people most frequently viewed. Click the "referrers" link to see where people came from (what page they were on when they clicked a link to your site). Referring links can tell you what sites are best for promoting your site. Entrecard.com, for instance, often has a large number of hits. Click the "searches" link to see what people searched for in any search engine (Google, Yahoo!, etc.) to find your blog.
I got nice tips for check the traffic of my blogs.. I will surely use this tricks for check traffic... thanks to all for sharing useful information.
Theres ton of plugins for stats(just do a google search), but I would highly recommend Google Analytics.
I am using Google Analytics & stat counter for my website but Google Analytics can do best traffic tracking.