Whenever i check my website's backlinks google give different result from the other tools like backlink watch,iwebtool, can any one tell me why ?
Google only shows a small selection of your links. If you want to see all of them, go to yahoo and key in link:yourdomain dot whatever extension you have
Also, add you site to Google Webmaster Tools - from within that you can see many more links. But do not ignore the links that are displayed in the the links: search as those are the links that Google consider very important for your ranking, so make sure you hold on to those and get more of that type of links.
30 Backlink Checker : http://www.seocommunity.in/showthread.php?2292-30-Backlink-Checker-and-Link-Analyzer-Sites
Instead of linking to a forum post with a link to the real resource, why not link directly to the blog post? http://atniz.com/2009/03/20/29-backlink-checker-and-link-analyzer-sites/