Ask HN: Review my Twitter recommendation engine

Mofollow http://www.mofollow.com This is my official public launch, just for you guys on HN. I have been developing this bad boy long before Twitter announced their user recommendation service but I've been hesitant to go public. There's a couple reasons behind my wariness: 1. It's currently only running on two linodes. 2. I wanted to ensure I had my MongoDB session handler working properly for scale out. If you notice any problems regarding sessions, please comment to let me know. I just enabled round-robin DNS and I had to fix a few hiccups along the way. 3. The number of API calls made to Twitter to generate a request is quite high, it's along the lines of ~105 requests if you have over 100 friends. Due to the sheer amount of data and handshakes being transferred, I was wary of both my bandwidth and the server load. Oh well, here we go. It is quite likely you guys could get my servers to a crawl. If anybody is going to stress test my server, I would prefer if it's my fellow hackers to give appropriate feedback (and snarky comments) before I go entirely public with this thing. I do plan on some form of integration with the new twitter recommendation API calls as well in the near future, but for now this is my completely custom version. As a side note: I would appreciate it if you didn't tweet or blog about this as the site hasn't been stress tested and I'm just looking for some preliminary feedback. I enjoy any and all comments and criticism.