Sign off, turn off the PC and stay off the internet.
Nothing is completely safe on the internet.
These kinds of threads kill me. Use a good anti virus software, pick a favorite browser, and make good decisions.
I have caused waaayyyy more woes for myself by installing bad software than I ever had virus wise, or being hacked into, or spied on, or security related problems.
The browser wars and security threads on these forums blow things way out of proportion.