Twitter is the best place for commuters to chat and share information while in transit. However, Twitter has no facility to create groups. To get around that, Twitterers use the hashtag #commutee in their tweets. The group can then be viewed at various places. Here are my favourites:
Train windows clear and wifi OK on a Friday #GrodonJacob band work on iPhone #commutee #mbta Much better morning today! Nice ride on the bike Pool Pump working after dying out over night. Yesterday rough through and through #commutee 
On the very quiet 7:30 into London. Realised at 7:00 (still in bed) that I had an 8:30 meeting. I like a challenge #commutee Train windows are clear and wifi work so its not all bad #commutee #mbta Tough morning! Problems with pool pump kept me too busy to ride to train. Just as well it poured when I would have started ride. #Commutee. Train windows clear on the entry level wifi seems ok and I have #TMBG podcast on the iphone #mbta #commutee NIce ride this morning iphone app #cyclemeter is having lots of trouble with getting the GPS signel so its pretty off #commutee #cycling 
I'm walking across the Tay Bridge with @MarcBenedictus. It's a sunny yet breezy evening. #Commutee Train seems a bit warm today but I'm OK with that. Wifi a bit flaky today WIndows clear on the lower level #commutee #mbta NIce morning for the bike ride, forgot to trigger iphone bike app so no auto tweets OK speed #cycling #commutee