Everyday you receive "likes" online or "thanks" offline - it's cute, but it's not memorable. Imagine: every day you have 10 virtual coins to express "likes", however, you can spend them on the real things.
Likecoin is the social network where every user receives like-coins: you could send them to your friends as likes, on the other hand you could buy coupons for the deals of our partners.
All Likecoin users the have a level. The level indicates the amount of received likes from friends and others during all this time. With the level up the more like-coins are provided, new privileges and deals are available.