Bookmarked Britney Spears spelling correction (archive.google.com)
The data below shows some of the misspellings detected by our spelling correction system for the query [ britney spears ], and the count of how many different users spelled her name that way. Each of these variations was entered by at least two different unique users within a three month period, and was corrected to [ britney spears ] by our spelling correction system (data for the correctly spelled query is shown for comparison).
There’s potentially some interesting corpus linguistics implied in some of this data.

hat tip: Kevin Marks