On of my new favorite sites (or Tumblrs, I think that’s what they’re called) is MLB Trade Trees, which is exactly what you think it is. They’re graphics of MLB trades, like the one you see of Ruben Rivera above. Of course that one could be continued, since Robin Ventura turned into Bubba Crosby and Scott Proctor, then Scott Proctor turned into Wilson Betemit, then Betemit and two throw-in prospects turned into Nick Swisher. The Gary Sheffield tree is pretty cool too, amazing how much it impacted the Brewers. Anyone, I recommend adding the site to your bookmarks or RSS feed or whatever, this kind of stuff is always fun.
(Just a reminder: Craig Robinson of Flip Flop Fly Ball did a killer Swisher trade graphic for us not too long ago)