In association with GosuGamers, the developers of Heroes of Newerth are offering You all as many as 700 beta keys. This is an opportunity to play a brand new game for free, whilst reporting bugs and other flaws that are inherent parts of games in their beta state.
You can check out what Heroes of Newerth is all about here
To get a key, You will need to offer constructive criticism and feedback on GosuGamers as a site and community.
In other words, writing "it sucks!" will not get You a key but explaining in detail why You think so certainly will. Click the link below to send a PM with feedback about GosuGamers, and You will get a HoN-beta key as long as stocks last.
Update
No keys left
Links
Heroes of Newearth - official portal