Well as long as the message goes it's not possible.
However we got the suggestion before of putting "(Solved)" In all the subjects of the threads that in fact gotten solved, this was discussed by the staff, they wanted to give it a shot, but as it appears no one barely does it, works for a few days then the mods loose their interest on checking up on which threads that are in fact solved, and those who aren't.
Mainly because a majority of the members completely ignore if there's a post about the same matter that they want to talk about. The pay out/benefits of doing this solved thing doesn't appear to be big enough on a larger scale, and to be honest, 90% of the help threads are issues regarding something that has been solved countless of times, but users and even mods sometimes like to be there for people, post, show interest, and maybe even get a bit more known on the boards by being there.
It's true that it's not the most efficient way and the process could be boosted by putting solved on everything for the users that do read, but personally I'm not certain if this is something wanted if you look at a whole on how the help section works.