Yeah... read the title :)
I've been doing it for about 4 years, but I've been out for about 2 years due to salmonella for 9 months, then when I tried to get fit quickly again by running a lot, and got patella tendinitis (ironic huh). I'm just about healed now and getting back into it.
What's your story?
EDIT: in case you didn't know (and most people don't), having patella tendinitis meant that I couldn't run or jump or land, which is kind of a problem for freerunning