I have basically two problems with one of my website. It is built in ASP. The First problem is that when i was checking my webmaster tools today as i suspected some errors due to which my traffic has been low from few days, I noticed that some external link is showing in my Site Links of webmaster tools. Its leading to some Free For All website. Iam annoyed as i never gave permission for any website to get my sites link. I strongly feel that it is stealing my traffic. So i should i remove it permanently and steps to be taken to secure my site in future. The second question is that some Fraudster is posting regular emails to other users to make them prey. I learned that he may be from Camaroon in Africa. So i want to block his IP Adress. So how do I do it. Its not a robot as i use CAPTCHA. And also some of my pages are showing not acessable crawl errors? Is this because of the above problem? And if i rectify above problems then will this problem be automatically corrected. Please suggest. Any reliable answers in this regard are higly welcome.