When a project in Visual Studio is tied to source control and a file is checked out, there's a user icon on the file. This is nice, but when you hover over the item, the tooltip says, "Checked out by someone else or in another place." Gee, that's not very useful. What if I want to know who has it checked out? The only answer I know of is to find the file in the source control viewer, which can be tedious at times. Having this info in a tooltip would be nice. Better yet, bring me to the user's profile or something.