A team member can create a project and a list of team members, who are then emailed at regular, slightly random intervals of their choosing (every day, twice a week, once a week etc.). They receive a friendly email from Offbott, letting them know what the team is up to, and asking what they're doing on the project, right then. These reports are compiled into a shared, private journal which can be reviewed by the team, and sent out as a weekly digest.
Offbott was very well received by the Lighthouse team, who use it daily, and is in use by a number of other small teams. If you're interested in using it, contact me or Natalia.