[rspeer]

If you're generating alphanumeric IDs, removing I, O, and U from your alphabet really does decrease the likelihood of the ID being perceived as English profanity.

Sure, nothing involving letters will be perfect, but this is something to take into account. You can choose a level of risk in your IDs somewhere between purely numeric IDs and the Automated Curse Generator [1].

[1] http://thedailywtf.com/articles/The-Automated-Curse-Generato...

[hyperpape]

That's why I said it was a good try. I don't think it's a bad idea, but if you ever wanted to push the needle close to zero, you would have to add some other layer of checking.