The crawler’s been trying to make the best of having only 150 API hits per hour for a couple weeks now. I haven’t had much time to work on the site lately, but once I dug in tonight, I discovered that for some reason the OAuth token and secret for @FavRatio had changed. That’s all it was. I reconfigured it to use the new token and secret, and now it’s back to 350 API hits per hour. The crawler is well on its way to catching back up and staying totally up to date.
I feel kind of stupid realizing that it would have been such an easy fix this whole time.