[chimeracoder]

> They never "locked it down", they just rate limited some vital endpoints and never bothered to add endpoints for new, important features.

More importantly: they introduced a lifetime cap on the number of OAuth tokens that applications could create, which meant a lifetime cap on how many different users a Twitter client could support. Once you hit your Nth user, you could never have a new person authenticate that client.

That killed off basically every decent third-party Twitter client.