My roommate doesn't drink at all, and it'd take me the better part of a week of after-dinner drinks to take care of it, and I'm not positive it'll stay good that long, even with the vacuum stopper... Sweet wines last a bit longer than regular ones, but the taste still starts going off pretty quickly...
If one or more people who appreciate wine would like to come by and help me with this problem in the next few nights, I'd be happy to have visitors...