I queried a list of local accounts that posted through a popular cross-poster tool within the last 7 days and who didn't post from the web UI in the same time frame, and sent them a warning/request to re-consider cross-poster usage. You know how I feel about ghost accounts and their spam in the local timeline.
In hindsight I should have checked for more apps than the web UI, because I got some false-positives--if you got an e-mail, keep that in mind.