If my experience didn't tell me something entirely different, I'd probably agree with Joe's "generational" generalization. It's certainly a logical assumption.
However . . . we find at least as many (and probably more) computer savvy grandmas and grandpas either ordering directly from us via the internet or calling us while looking at our website as any other age bracket. They think it's great to be able to look on our site, see what's available in pictures, and order it without having to go to the trouble of going shopping or dealing with a "sight unseen" telephone order crapshoot. And they don't want to have anything to do with a wire order.
They know the resources to use to contact a local florist. After all, they find us. And they do it from all over the world every day of the week. They also, for the most part, seem to be very aware of the terrible value and risk of sending a wire order through anybody. I say that because the first thing most of them want verified before they'll talk to us about anything else is whether we're really located in our town and do we do our own work and do we deliver our own flowers. I sometimes think that older folks do a better job of networking and getting the word out about scams, such as those that have taken over this industry through the internet and our wire services, than the younger generations seem to. Older folks that I deal with certainly seem to be more aware of what's going on than younger folks.
Some of the most internet-savvy florists who prowl this board are grandparent age. Why would we think that the general public would be any less savvy.
About the only time that I see college-age and young adult buyers significantly outsurge any other group is at Valentine's Day. And I guess we see it to a lesser extent immediately after university breaks. All of those lonely and broken hearts and guilty consciences are good for this business, ya know.