I believe many bloggers faced the same problem that their blogsite will be redirected to the below site with the message your domain has expired on Jan 03, 2007.

It lookss to me that Adverlets never renew their domain that caused the redirection to adbaaz.com.

I have found two ways to resolve this problem.

1) Take out all Advertlets links from your blogsite temporarily.
2) If you are using Internet Explorer, Add addaaz.com to the restricted site. I cannot find out at Firefox, the option for this.