steven.penn: Could someone please explain the 'Reputation' system and how does one achieve awards
Ah. Yes. Of course. This question has never been asked before. Quick summary. :)
The reputation system on the GOG forum is a by-product of the ongoing ludicrous insertion of gamification mechanics into online communication. It is founded on three erroneous ideas, (a) that offering your help and opinion on an internet forum needs any reward besides the basic intrinsic reward i.e. the satisfaction of offering your help and the privilege of offering your opinion; (b) that a system that lets you "downvote" others would, given that the internet is a place in which negative comments/actions tend to outnumber the positive ten to one, not be abused beyond belief; and (c) that such a system would provide sage advice to new users concerning whom to trust/befriend/like and whom to shun/insult/write crazy PMs to that tell you in no uncertain terms that the fuckwit who just insulted the shit out of you on the forums is definitely in the right because he has a four digit reputation value while you're deep down in the negative threes, which will immediately happen when you e.g. offer philantropist views in some of the more political threads.
As GOG officials have been aware of those all encompassing flaws for many, many years now, plans and promises have been made several times to get rid of the reputation system altogether. You can find no less than four wishlist entries in the GOG database that ask the company to do exactly as they've said they'd do. However, the forum software is now so antique and the people who made it probably so not with GOG any more that this evidently simple cut could hurl the whole forum software to hell. So what basically everyone, GOG officials included, is waiting for is an entirely new forum software with no idea who is going to program it. Expect there to be a swift implementation before or in 2077.
TL;DR: What GR00T said.