Yes you are right, there are some websites where you can obtain free bitcoins for watching sites, playing little games for free or even for watching videos.
These sites are simple marketing-sites which want you to visit new sites with bitcoin-related services and products, but since you can earn some free bitcoins here, its fun, of course you don’t earn very much, but its a start if you want to take your first bitcoin steps. You don’t have to register, most websites offer you just to send your bitcoin address and nothing else and you can start earning bitcoins.
First i want to say this is a private site where i want to share my experiences of earning bitcoins – i am not an “official” Bitcoin representative. On the other side Bitcoin is build and designed to be not owned by any central party, but being a decentralized and safe money system supported by individual people like me.
Starting 2 years ago i discovered more and more about the Bitcoin world – it’s a small, developing world like 20 years ago the internet.
If you want to earn bitcoins and want to know something about Bitcoin affiliate sites, you learn the hard way that there is much scam and false projects outside where you can lose your bitcoins.