I got a message that looked like an ad from Microsoft. At the end, there was a message saying "You can simply WIPE Out your email from Mailing List click here". I clicked. I got to a page this webpage: http://gokk.tezharimirch.com/
which is obviously not from Microsoft. The page just showed an "404" message - I did not fill any form or do anything else.
What should I do now to protect my computer?