Hello,
I have created http://allchains.info which contains block information taken from all fork chains, current bid/ask prices taken from exchanges, profit/break-even points of forks compared to mining bitcoin at current difficulties, total speed of each chain, and what the next difficulty will be (and when it will change).
Let me know if you think of something else you would like to see there. I hope that it is useful. I will be on top of any new forks that come out and have their information up on day one.
News
2013-04-06 : Fixed the chain size data.
Please provide feedback here or in irc if you have comments on my current work in progress or other ideas.
