To help protect yourselves, apart from having up to date anti virus etc, ensure your pop up blockers are on and working. Both Firefox and Internet Explorer have a pop up blocker.
If using Internet Explorer 7, just click on the blue cog wheel on the tool bar (Tools) and you should see a Pop Up Blocker in the menu - ensure it is turned on.
I did have the Genes Reunited website in my allowed list for pop ups but I've just removed it!

Cheers, PP