[hyperpape]

"No “u”, (and no “o” or “i”) so accidental profanity cannot happen."

h0ly fvcking sh1t!

It's a good try, and making all the letters lowercase makes the numbers as vowels less legible. But if you're creating random strings you will create profanity and slurs.

[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.

[deckar01]

I find the entire premise of the chosen alphabet rediculous. Long, random IDs are not for typing nor reading. It doesn't sound like they are even being used for user facing URLs.