What is the best 32bit hash function for short strings (tag names)?

Question

What is the best 32bit hash function for relatively short strings?

Strings are tag names that consist of English letters, numbers, spaces and some additional charact

Answer 1

If it's rare that users add new tags, then you can use a perfect hash (http://en.wikipedia.org/wiki/Perfect_hash_function) that's recomputed each time a new tag is added. Of course, without knowing the problem you are really trying to solve, it's guesswork to figure out what you might do.