If you have a recent Samsung LCD tv (series 6), this is the thing that will take it online. It does what it says on the box, but for a wi-fi dongle this is a rip off. The only way Samsung is getting away with this is that this is the only dongle which has drivers pre-installed in your tv, so there is nothing else you can use. Yes, it will get your TV to access your DLNA content on your wifi network, yes, it is easy to set up, but you do not get full internet connectivity, the yahoo widgets give you very-very limited choice of content. If you want stuff beyond youtube, weather, news (very limited), stocks (so-so) - well, you cant. You can get flicker, but forget myspace or facebook and pretty much all else.
All in all, if you want the full functionality of your tv, you need this, but be aware, services are limited and the price is ridiculous!