The CTA has taken the somewhat unusual step to issue a public statement about what happened during Monday night's rush hour when Red and Purple Line service was suspended between Berwyn and Addison due to "police activity" at a building directly opposite the L embankment just north of the Wilson stop. Read the statement.
The CTA notes it sent out 20 updates on Twitter, and gained 500 new followers, with more than 4,000 now. I give the CTA a lot of credit for its good use of Twitter during the service disruption. And according to comments in my post yesterday, it seems to be getting better at communicating the old-fashioned way at stations.