I've been rooted since this time last year and I agree with Jim. If you are nervous about it, don't do it. If after reading everything you can find, you still are interested then study until you are 100% convinced you know all the steps and all the steps to recover (if things go bad). Make sure you not only know the steps, but what the steps mean.
It's very different rooting and hacking on a phone like the Droid that isn't locked down hard versus most of the new phones like the Droid 2G. If there is an sbf for the Droid2G, then the risk is pretty small.
and rooting is SO much easier now. When I did my D1 last January, I had to type in a butt load of code in to TE, making sure every space, CAP, and comma was in place or risk a bad situation.
Now, one click and you're done.