How To Make A Great Smart Search App?

edit: a great smart search, not just an app for searching


i want to make a type as i go smart search like the "newegg" app or the "amazon" app

im not too sure how to do it or where to start, can anyone lead me to the right direction?


(newegg screen capture)





my smart search right now is calling a webservice using XML, and i get it after i press the search button or pressing return (which it seems like most simple searches operate)


i want to do it the right way and make it look nice. instead of looking like a ragtag app.


(here is my smart search)

 

would the documentation/answer in this link, the solution to my problem?


http://stackoverflow.com/questions/5019909/iphone-tableview-search-xml