The built-in album art search function is very useful but I feel the name of the menu item does not reflect the purpose of the tool. How about "Search For Album Art Using" ?
As it is right now there is no metadata displayed with the results of the search. It would be neat if you could display resolution and format information alongside the images.
The menu is called "Search for Metadata" because Rip has a plugin system which allows plugins to return arbitrary metadata. It just so happens that the current two plugins both only return album art.
As far as resolution info, I will take screenshots to see how it would look and post some here.