I'm not sure if 4Tube.com is half as good as 8 Tube, but the name certainly lends itself to the idea that it is. So yeah, 4 Tube is just a standard video sharing platform that has a specific gay area. Note that unlike a lot of other adult tubes, you can actually refine the clips further by finding specific niches within the gay category. This is a good thing, as it allows you to see gay cumshots, fisting and group sex scenes with relatively little pain.
The site allows you to filter the content by length, time updated, duration, rating and number of views. Oh, it also has the additional benefit of allowing you to search for scenes that are HD only - this is very important if you want the top quality material, as it will show you the 720p and 1080p productions. Not many free tubes offer this, so consider yourself lucky.
The only real downsides are the scene lengths and adverts that exist. It doesn't ruin the site, but short videos certainly don't put a smile on the face of my readers.