(Note: this is filed as part of the “Paper Cut” bugs — we assume that there may be multiple existing bugs on this. Please make them block this bug, and we will de-dupe if they are indeed exactly the same. Thanks!) Recommendation: When an add-on is outdated, is no longer being maintained, or is no longer working with a users version of firefox suggest alternative add-ons.

Hmmm, AMO or addon-manager issue here?

Being able to easily find alternatives on AMO at least would be great for a number of reasons. But currently, AMO only seems to keep track of what extensions are often used together with a given extension. Similar to the tags system, AMO should also have a "similar to" feature.