The danger with offering these last-minute deals on twitter is that the prices can appear to be a false discount for some travelers. One reader complained that an outbound fare from Boston to Chicago for $9 was dishonest, since the return flight was $160.

A quick check today shows all the trips offered are round-trip, locking in twitter travelers to a two or three-day stay.

ASM likes twitter for last-minute vacancies of all kinds: doctor’s or dentist’s appointments, your restaurant gets a last-minute cancellation, your spa suddenly has an opening. If you have your social media in place, you can fill those last minute spaces.