I'm looking for a mod that enables users to vote up threads. I.e. not replies within threads, but threads themselves.
Ideally, I'd prefer to have only up-voting; no 1–5 stars, up/down-votes, multiple-choices, etc. just up-voting (something that's akin to Google's +1 button).
Is there anything like this out there? I've tried searching for this but couldn't find what I was looking for.