The page is heavily messed up in internet explorer but looks fine with firefox.
Other than that there are many things not yet working alright (for example the links from the news page, the support gives an error) it seems to be well strucured and has some great features. I would like to change my password and I don´t think that you really need a forum there.
How can I upload my own stuff? (this is the most important thing!)
If that really works, it would be a great alternative to the already existing things. Without it is just an other ressource site which is going to fail. And there should be some kind of qualitymanagement. Thing uploaded there have to work without any problems and have to have a good quality. It should be able to comment without registering and there should be a rating system (0-10 points or an even bigger range) to find good stuff easily.

The beginning is quite good

Edit: I see, you have a rating system but the range is to small (why not 0 to 100?).