if i type something too fast the results sometimes get muddled and stuck on the first letter i type. for it to work sometimes i have to be typing slowly. i also sometimes get some bizarre top results while i am looking for the second-to-most result. other uses show it entirely effective though.
can't there be more than one instant wikipedia? yours loads the article directly, whilst mine loads related articles when typing, with a snippet of what they are about.
mine is faster in case you just want to know what something is and not everything about that. and mine also shows related results that may be of interest, or not.
I prefer the direct load because the 1st hit is almost everytime the page I would like to read. For example I use http://WikInstant.com for college (i.e. quickly looking up diseases), WikInstant.com is perfect for that doesn't require me to use the mouse (compared to other wiki instant sites).