People will like it eventually whenever they think something can be considered valuable. Liking something upfront before having it reviewed is the wrong way around in a section like the release section. Likes should show wether people think it is a good release or not.
Here is a great example:
http://forum.ragezone.com/f353/track-visitors-1051145/
I think it is wrong to have the download link hidden in a release section. Other sections I don't really care about and only Jamal is using this feature. Nobody else neither can staff. Jamal is only doing this for the likes. Trying to post as much as possible gathering as many likes as he can.
People should make up their own mind wether the person that releases something deserves a like. They shouldn't be forced to like it only to notice it is a shitty release. You're not going to get a valid view on it if people really like it or not.
It is just wrong in my opinion that people are forced to like some content before even having reviewed it. I don't care in other sections but in a release section releasing server / client files is the main point and those will be reviewed by the community and they make their vote by (dis)liking the content and / or leaving a comment about it.
Posting 'thanks' is just spam
BUT it shows that the user actually likes the content released.