It's not clear if this move bodes ill for someone like the injured Austin Collie or the under-performing Brandon James, but the Colts have signed frequent practice squad member Taj Smith to the active roster, according to Mike Chappell at the Indianapolis Star. Smith was with the Colts all last season on the practice squad, and was with the team during training camp and the pre-season this year. He was cut from the team just prior to Week One and, to my knowledge, hasn't signed with an NFL team since.
Smith is known as a type of player who often looks great in practice settings, but has trouble playing well 'under the lights,' as Bill Polian often describes game conditions.