Since Steem communities are a thing now (on beta.steemit.com that is. link) I went ahead and made one for Gridcoin.
What is gridcoin? Put super simply. It's a cryptocurrency that rewards contributions to BOINC. (Which is a volunteer computer network system for science, You donate processing power and help scientists crunch complex science data)
On a more technical note, It's consensus mechanism is a modified Proof of Stake, The more coins you own, stored in your wallet, the more often you 'stake' (make a block, receive your rewards), The difference from traditional PoS systems is each block is rewarded a flat 10GRC rather than interest.
The Boinc reward comes in on top of the base PoS reward via the complicated and far to long to explain here system.
Anyway you can find out more at the gridcoin website
You'll also find a ton of useful links to various other communities where Gridcoin folk hang out.
That's all from me for now. Be sure you join the community and make a post or two. :D