Last modified: 2011-04-14 15:13:26 UTC
The DidYouMean extension normalizes page titles using case and visual similarity implemented in an ungainly series of preg_replace calls.
Tim Starling developed a custom replace routine to do a similar job detecting spoofed usernames. This code should be used to improve the preg_replace calls.
The AntiSpoof extension's methods were written by Neil Harris, not Tim. :)
Updating comment to clarify what's referred to.