I've just released a new plugin called "ItemManager". It lets you manage some user defined winodws that provide a view into the items in your backpack. The list of items is customisable (simply drag them in) and then they will be looked out for.
Perfect to identify Junk.
There is a tutorial in the ReadMe.txt file that explains how to use it as a junk manager and perform super fast "sell all" jobs with junk items only.