Not really.

It started as a site about gamingwith a comic strip (which is still an awesome read). Now they have twitch streams and diamonds which you can collect with codes (found on youtube and other places, but conveniently listed here on SG by Garandro and reported by users.
You can exchange diamonds for mystery packs that sometimes give you pretty good games. A lot of the times they're games that have been free at some point, but I have won 20 bucks steam gift cards and wishlisted games so it's worth checking out.

You also get coins for reading the comics and they have games you can exchange for coins. Currently Edna and Harvey on GOG.