There are a lot of social connection gadgets aiming to bring together the audience of your blog or website.
Namely: Networked Blog through Facebook, My Blog Log, Blog Catalog, Google Friend Connect etc. etc.
I think connecting through google friend connect should be the easiest one. It can be easily integrated into the site. See the video below.
Although there are a lot of people using Networked Blog through Facebook account, some find it not so convenient. Facebook connect is growing for sure. We can talk about that in future. :)
Once it is installed, connection becomes very easy!
Installation is easy.
This video explains it all!
I find many blogs out there to be based upon blogger platform. So, installation is piece of cake.