newbies - 3:52 am on Dec 8, 2012 (gmt 0)

Recently MSN bot keeps crawling my site almost all day long and sends the loading to the roof. It is really a DOS attack. I googled it and found many people have the same problem. How can I stop this from happening? Using robots.txt? I also heard the MSN bot does not follow robots.txt and heaves really bad.

BTW, whenever i see the word bing, I want to vomit.