uptweet :
1.uptweet pays for post and uptweet
2.sign up use Twitter
3.payment Proccesor Bitcoin
link: http://uptweet.com
Steemit:
1.Steemit Pays for Post and upvote
2.sign up use Facebook and reddit
3.payment Proccesor Steem coin
link: https://steemit.com
For 1 second its same Feature but all very very Different...
Steemit use own Token / virtual coin STEEM
link:https://steem.io