Bulk Tagging!
You can now bulk tag (or "batch tag") supporter records in Salsa.
Here's how easy it is: First, run your query (for example, select a group, if you'd like to replace a group with a tag). When your query results are returned, you will see in the "Supporter Operations" section a "Bulk Tag" option. Simply enter the term you want to tag these supporters with, then hit the "Tag" button.
Click the image below for a full-size screenshot.
Bulk tagging of other objects (like donations) is on the radar.