Can Post Voting be used for comments?

Can post voting be used for voting on comments? And even more ideally can it be used in tandem with the forums plugin to create a "Reddit" like feel with multiple threads? My client wants to create a forum site like this: http://sur.ly/o/vivacwb.socialsphere.com/AA000014
and I'm hoping these tools can get the job done.
Thank you,
Katie Davidson