would be a good forum....just as long as people are going to be talking about their own experiences and not others' exp's it will be a good way to learn different techniques on breeding them and how to go about inducing breeding and rearing...that will entail all types of piranha's not specifcally just P. Natteri but other species of Pygocentrus and Serrasalmus as well...Hope I get your Vote for Admin!??? hehe
Could be, more like a forum that we think topics that should be saved are kept in. So the thread won't be lost and is easliy found. It also helps new members from asking repeat questions. Most of their questions would be answer by just looking in the saved topics forum.
I think you should make the saved topics forum impossable to post in, it should be saved for those really special topics which are either really popular or really educational.
They should be moved into their by the mods and administrators from the other forums not posted in their from the start.