Some time back twitter had disabled the Name Search feature found under the Find People tab.
They have relaunched the service and it looks all the more better. I use Name Search a lot of times to find my friends whose email address I do not have. Name Search makes my job a lot easier.
The twitter blog says that the new name search is much faster, more relevant, and it even has a phonetic similarity algorithm which is
basically fancy talk for spell check on names.
What that means is, if you were to search for Barack Obama but spelled it as Barack Obbama then it would ask you the question
"Did you mean Barack Obama?"