Thank you for your answers, everybody. From what I've heard and read, paleo people seem most interested in the following issues: sports injuries, pain from autoimmune disease, nightshades, inflammation, and posture. I started off my website with articles on nightshades, homeopathy, and bad pain conditions. I don't want to "market" the site or else I'd have to ban myself (location should be apparent in my profile), but if interesting paleo+pain issues come to you (like grace's mention of endocrine disrupters and PPAR agonists below) please do answer!
Chronic pain is a persistent signal from your brain telling you that something is wrong with your body.
Sometimes nothing much is wrong, but the signal is amplified for mysterious reasons. Sometimes nothing much is wrong, but your tissues are acting weird for mysterious reasons.
Many of these mysterious reasons can be tied to diet. I'm starting up a website in the next couple months to centralize peer-reviewed evidence on non-surgical approaches for pain. Approximately half of the treatments will be related to diet, and the evidence tends to conveniently fall on the side of paleo.
Which paleo / pain issues are you most interested in? Rank them if possible. I'll start with issues that garner the most interest and work my way down. Here are some that will definitely be in the queue: