@bystander:

With the old mesh client there was an explorer extension that let you share a folder via mesh. Once shared it would display with a blue folder icon. That of course went away when they implemented the crappy mesh client in WL wave 3 where they merged it with Live Stync. It's too bad because mesh was great in beta -- award winning and everything. Sure its Vista-esk UI was a bit dated but they didn't need to remove functionality to update the UI. At least it's consistent with Microsoft's "also-ran" theme they seem to have going on these days.