Do you mean the small squares? I have them and they are simple to care for, no more trouble than the plain tiles. In fact, I find them somewhat easier to clean than the subway tiles My only regret in getting them is that now I realize how trendy they are and will make the bathroom look dated when the trend has passed.

I have them in my shower and all around my tub. I love them and there have been no issues. Keep in mind that the grout for those will be different then other larger tiles. So in our shower the larger tiles have sanded ground but the glass tiles have unsanded.

i have some glass subways in my shower and i wish i had put more of them in... they are very easy to clean. i do put the rain-x like product that the shower door company gave me on them when i do my doors (~ once a yr...) and squeegee them (and all the tile) after showering and that's it!!!

Great input. I'm need to make some quick decisions as we started our remodeling project unexpectedly after the bathroom leak happened few days ago and your responses are helping a lot.