reading through some threads in here, my attention caught one flash banner, decided to check out site that followed the link, at the moment i pointed my mouse cursor on it, ready to click it i heard voice out of nowhere "CLICK ME!" (i had speakers on laud w/ fav music) - now it got me thinking, do i really want to click it?
point to advertisers and guys who produce ads - if visitor already pointed mouse over your banner, expecting nothing but going to click on it, i imho thinks no need to further tell what to do. on the other hand, mouseovers can be well used for unhiding, promos, special deals, info about contests, etc. - shock your potential customers/affiliates with open heart and mind, please, no directives needed
cheers,
sergio