Have u come across any such bogus sites?

Yes a lot the best way to avoid these sites is to have a site adviser, this will tell you the feed back from the site so you know what its about.Along with a grey,red or green at the bottom of the page. Norton has one as does McAfee both very good . Also keep in mind if they want money from you to start making money from home it is usually some sort of scam. The Yoono tool bar also will block the content if its not safe to use or has a bad rap.With so many scams today you can never be to careful .