Hi there,
If you like, you can try my service called Spootnik (
http://www.spootnik.net).
It synchronizes OmniFocus with Basecamp and vice versa and thus helps to share tasks with your team-mates or to show your progress to clients and get feedback.
It's a "paid by month" service with a 30-day trial period. Don't hesitate to write me (lars@spootnik.net) if you have any questions.
- Lars