Sorry to raise a semi-old thread from the dead, but I'd just like to add my two cents.
I've been running a Tor exit node on my Linode for the past three days and followed Tor's "
Tips for Running an Exit Node with Minimal Harassment" along with a reduced exit policy. I've only received a single complaint (which wasn't really even valid- and in fact was almost certainly completely automated), which was promptly resolved in one post by me and simply blocking traffic from exiting to the site in question for 24 hours.
Throughout the abuse complaint (both mine and the original poster's), Linode remained respectful and professional. Overall I'd say that Linode handles the situation well. I recommend them to friends and co-workers daily.