"First of all I should say that I agree with davy" - Norman Tebbit.

Really, really good links both internal to other pages on the site and to external related sites. Ensure that the information is intuitively laid out as well. Short attention spans + having to click through 15 different pages to find out something that should be on the 'Contacts' page = annoyed user who will look elsewhere. Sounds like common sense but you'd be amazed at some of the sites for allegedly professional parties you can find that hide all the stuff people *want* to know in the arse end of a directory somewhere that can only be accessed by following a very specific 7 or 8 link sequence...