Here's some reddit alternatives for those who think reddit is already on a down fall, just incase:
Snapzu - Great design mixed with what seems to be a friendly, mature and lively community. Site includes an XP leveling system instead of karma, and just feels really polished.
Voat - Looks identical (almost clone-like) to reddit in functionality. Large crowds make it busy but unreliably slow. It was completely down when I first tried to view it.
Aether - Self proclaimed "anonymous reddit without servers." Access required a download so I didn't go any further.
Stacksity - Design automatically reminded me of 9gag that included pictures along with articles and news. It may be something for you, if you like that kind of browsing style.
Frizbee - Another alternative claiming to not censor of track you. Design on desktop was a bit clunky and large.
Hubski - I've heard of this one before. Looks like one of the busier alternatives along with Voat and Snapzu. Shares are used instead of voting to make things popular.
Empeopled - Another awkwardly clunky design on desktop but the content was fresh and the users weren't mutes. Gives more voting power to experienced users, although I'm not sure if that's a good idea after what happened at Digg.
Hacker News - Lots of programming talk and tech talk. Hosted by a tech incubator so it makes sense about the content.
StumbleUpon - I've heard this one before but decided to include it for entertainment value. Loads of content makes you want to click and click.
Piroot - Mostly video content, some articles and pictures on this funny sounding reddit alternative. Not much action however. Design can also use some work.
Linkibl - Generic looking alternative that has interesting but scarce content. Few comments make this place seem really dull.