I've noticed quite a few questions cropping up on MetaSO (here, here, and here, for example) concerning the desire to increase visibility for old questions that may not have any answers, or just not enough quality ones. If you want to bump a question that isn't your own, editing and answering it are two options. These options won't work if you don't have the Rep to edit posts from other users or if there is nothing to really add to the answers. Too much editing also summons the "auto-wiki".
Do you think there would be any benefit to having a quick and easy-to-use bump feature added to questions?
Some implementation ideas:
I was thinking of there being a link, maybe next to the edit/close/flag links, that each user could only use once per question. It would bump the question just as if it had been answered or edited. Once you use it, the link disappears for that question. It would also probably make sense to put a Rep limit on using the bump feature, so only more trusted SO users could bump things they felt were in need of more visibility.
Based on Jon's answer, there could be a limit like "a question can only be bumped X times per month." The number of bumps left could be displayed next to the link. When they reach 0, the link disappears. After a month, it resets. This would allow a user to bump more than once, but avoid "mass bumping" from many users.
As suggested by TheTXI, the bumping mechanism could have a small Rep cost (1-5 points).