Do we need this function?
Personally I have NEVER used it before and I don't see the point of it.
If you trying to find a friend, I'm pretty sure they would spell out the name for you to find.

This function is probably a god-send gift to RMT whisper spam. unless there is another way to just randomly find you without using this search function.

If this is the source of RMT spam, I suggest to remove it.