Several times when I've gone to links within threads I've gotten this:
The page at www.mobillean-tivirus.com says....and then it tells me my phone has 13 viruses and to follow the instructions to remove them. Needless to say...I haven't.
It looks like there's a dodgy ad somewhere on AB: http://www.androidauthority.com/mobile-scareware-ads-338182/ Email the Ed ( theeditor@theanswerbank.co.uk ) to let him know about it.
I was having the same problem this morning and was close to hoyin the 'phone out the window but I downloaded a couple of apps previously recommended by Chris and it disappeared.