Decisions, decisons

I've been familiar with Shelfari for awhile now. It's one of those book-ish sites that lets you keep track of what you've read, what you'd like to read, what you are reading, and in the 21st century way, you can communicate with others about your reading life. The other day I was exploring Goodreads with a classmate in more depth and found that I quite liked it. Maybe even more than Shelfari (sorry, Shelfari. You are still on my website and blog, though). Goodreads has a cool montage feature/gadget/widget thing that I like. However, any comfort I've gained in the above realization and acceptance process has been dashed because I've just seen something new on one of the blogs I'm following. It appears to be called Library Thing. Maybe this one's better than the other two. Do I explore this or leave well enough alone?