I love visual blogging sites. Tumblr, pinterest, weheartit, I love them. What they all have in common is sharing pics. Say you posted this funny cat picture. Your followers can "like" or "heart" the picture or they can reblog/repin it. By doing so, the funny cat picture shows up on their blog. Others then reblog the same pic to their blogs. So your friends list is full of pictures due to the people you follow. For example, many of my followers love to blog about fandom things like Sherlock Holmes, Supernatural, Trek, Harry Potter, and the Avengers. I reblog pics from their blog. So now my blog is full of Loki. XD
Tumblr is the most popular followed by Pinterest and WeHeartIt. Check out my blogs to see visual blogging in action.
I have a tumblr tutorial at http://vickyblueeyez.livejournal.com/136006.html
All are free to set up except pinterest where you need an invite from a user which I can send you.
I really like visual blogging now more so than regular blogging. Funny cat gifs do help.