Pooling availble?

I thought pool’s were still in development? But I see people talking about being part of a pool? I cant find anything explaining how to use the pooling ability?

I see that it is not officially available. I have a hard time trusting the sites that run pools when its not officially available.

There are quite a few pools by now. However, non of those in operation use the official pooling protocol. They are all just hacked together.