Anyhow, I notice that I get a lot of traffic from people looking for inspirational photos of glass mosaics. When I'm looking for some inspiration along those lines, there are three sources I turn to time and again. They are Mod Walls, Ann Sacks and Walker-Zanger. I think those three have some of the best websites out there for seeing this sort of thing in action. Here are a couple of great rooms I found on Mod walls and all of them feature glass tile mosaics.
As you can tell from how varied these things are, there really aren't any rules except the single overriding caution of life in general; just because you can doesn't mean you should. Got a question about a particular image? Just ask and I'll chew off your ear with an answer.
This is what I meant about the difference between can and should.