Basically - I use the stumbleupon app. I notice about 75% of the sites I visit have this annoying pop up window, wanting email, social network interaction, or etc. I flipping hate pop up windows/adverts etc. Just wondering what others use to "Stumble" the internet. Feel free to discuss the pros and cons of pop up adverts. But I just block those sites straightaway, instant turn off. And I think it's a turn off because I clicked through to read an article - but that article is obscured by a fancy dialog box asking to connect with Facebook. Don't get me started on facebook!