A regression model trained from existing spam and abuse report data to twitter would cover ~99% of terrible at-replies on twitter.<p>Look how effectively a hacked-together script that just uses a couple of heuristics like GGAutoBlocker works. [1]<p>Something a little more principled, trained with unfettered access to user data, would effectively kill the problem. IMO.<p>[1] <a href="https:&#x2F;&#x2F;github.com&#x2F;freebsdgirl&#x2F;ggautoblocker" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;freebsdgirl&#x2F;ggautoblocker</a>