[SamBam]

It's the problem with star systems, which is that we'll always have different definitions. Your 3s are living next to the other poster's 3s and mean very different things.

That said, I think the world has also suffered from ratings inflation. I tend to assume anything under a 4 means "bad" or "meh" myself.

[chillfox]

The best rating system I have ever seen is the "best of two" system that pixoto.com uses to rate photos.

[robryan]

Bigger numbers don't help much either, rating systems out of 10 tend towards anything under an 8 or maybe a 7 being average.