I don't think the owners of BTCJam has the time to check every single thread on bitcointalk. Maybe they don't know about this thread yet.
Valid point, and I thought about that before posting. You are correct, the owners probably would not have enough time, but they should be paying someone to check up on threads on a weekly, or daily basis though. A "social media" team/person if you will. I'm sure some people would even do it for free for them, or for lower/no loan fees.
Im not advocating checking every forum, but at least the top 5. eBay/PayPal do not stay on top of people selling boosted/fake/hacked accounts, and now, its a total sh*t show/nightmare for all users.