Want to know about web master tool why we have need to use web master tool and what's its benefits please response with answer just verify our robot file and xml file or any other use of this tool.

You don't need to do it but I'd say it's a nice "to have".

Ever since I started registering my site maps with it, and combined with google analytics, I have noticed that sites I do get spidered, indexed and ranked in half the time it would take for that to happen naturally.

In terms of other benefits, it has other tools on there that I haven't used but I think are beneficial. Like checking how many sites link to yours, how many pages on your site have been indexed, whether or not your site has suffered an iframe injection, etc.

Thanks for your valuable information i hope your next post will be too much informative for all of us thank you.