Hi Terry, Good to see you back!
An interesting thread developing here, maybe I can bore you with my take on it.
Firstly I'm like you in that I shoot weddings at a weekend, and events at the weekend. Most of my brides know that I do other things, but I have two websites to keep things totally seperate. Hosting is soooo cheap now that I literally only have to sell ten prints a year from three sites, and all my web costs are covered.
Ian raises a very good point about contracts. Like him, I dont know how mine would stand up to a lawyer but their main importance is should the club secretary or whoever change, the moment they go through the clubs paperwork they will find it and they know who previous dealings have been with.
However, the number now willing to put pen to paper seems to be falling as more and more people are buying a cheap DSLR from Ebay and pestering the clubs, many of whom are saying "Yeah, turn up" just for the quiet life.
Personally whilst I only leave sports pix online for a limited period of time, my social events and weddings stay up for several months as I find that (a) potential clients are reassured simply by the quantity of events, and (b) re-orders still come in. Thinking about it, hopefully they are also reassured by the quality too!!