Are you seeing blankrefer.com pop-up ads ? Its possible that your PC is infected with adware.
Myantispyware team
Author: Myantispyware team
Myantispyware is an information security website created in 2004. Our content is written in collaboration with Cyber Security specialists, IT experts, under the direction of Patrik Holder and Valeri Tchmych, founders of Myantispyware.com.