Find Usages gets swamped by thousands of occurrences in Profiles, rendering it useless. I really only care about classes, triggers, and workflows. This is particularly problematic in a mature Salesforce Org with a large number of profiles, because each profile will have an entry like this that I don't care about:
<classAccesses> <apexClass>FooClass</apexClass> <enabled>false</enabled> </classAccesses>
In Java I think Find Usages brings up a dialog where you can select whether or not to search comments etc. There may be two menu items--one for the dialog version and one for whatever the dialog is set up to show.
The same thing could happen here and allow you to select various things, and then remember the selection between invocations.