Stupid Pop-Up Windows you can't bypass unless...

I absolutely "hate it" when website throw me a pop-up window asking me to Sign-up when I don't even know one sliver or 'string' (from string theory) about them. Even worse there is no way to escape, refuse or close the darn thing.
Thanks. I'll never return again.

Please if you have ever done this, stop it.
It does not work! It just pisses people off! If you insist on doing it atlease give me a way to close or skip it.
I have seen similar insane tactics on some of those Daily Deals website.

Case in point:
http://seattleux.ning.com/

(I think it's a Ning issue, to be fair)
I couldn't even find a way to send them an email about it. Go figure.

Similar example are welcome.

Thanks,
-mo-