This seems pretty reasonable honestly. Who the heck needs to tweet more often than 100 tweets per hour continuously?

I have a few friends who use Twitter DMs as chat, and 500 seems low for that purpose. Plus, I'd figure that a 1:1 message is a lot easier and lower load than trying to consistently share something globally....

Bots, probably.

Based on other comments this isn't the actual limit (ie: it's much lower) or the current implementation is broken.

Oh, cool, so it will effect bots and a couple people who could use the corrective nudge. Thanks for that.