Hi Mae, there are a lot of limitations on the free version. Especially on the intranet. One of things in particular is the mispellings alternative... if you mispell something on the free version it would return zero results (or only results with the mispelling). With the Google Mini it will decipher the mispelling and ask you "Did you mean ____________ (correct spelling)?" with the relevant links you're looking for. Free Google is fine for a smaller external site, but not for an enterprise intranet.