Well now I have a counterexample for when people say PHP sucks :). I think your site looks and works great and it just goes to show that great hackers can always do great things.

The advantage of writing your own framework:

  $ ab -c 5 -n 5000 http://thefeelgood.com/explore
  [...]
  Requests per second:    784.50 [#/sec] (mean)
  [...]

  Percentage of the requests served within a certain time (ms)
    50%      4
    66%      4
    75%      4
    80%      5
    90%     12
    95%     13
    98%     22
    99%     40
   100%     40 (longest request)

That's running on a 1/2GB Joyent accelerator.