I’m here live at the event Twitter is holding at their headquarters in San Francisco to show off — well, something. A part of it is inline pictures and videos in the main Twitter stream, but it’s anyone’s guess what else they have up their sleeves. One

Here at the DEMO conference in Santa Clara, VentureBeat’s Matt Marshall asked Twitter founder Jack Dorseyabout his regrets, “What can the 67 companies here learn [from your experiences with Twitter]?” Marshall asked.

Dorsey, who is still Chairman of Twitter, put context around his answers, “Twitter has some interesting scaling issues,