Page and wiki comments won't show in buddypress activity feed

I'm working on a multisite setup for the local social service community. I can't seem to get page or wiki comments to show up on our buddypress activity feed. Example: This comment on a wiki page doesn't show.

I'd really like wiki activity in particular (new wiki's added, wiki edits, and comments) to be integrated tightly into the activity feeds - it will support a culture of active contributions to the wikis.

Any ideas?