If you’re a paid user of the popular Rememberthemilk to-do and task management site, you may want to pick up their new Milksync for Blackberry. This link supports two way Blackberry synchronization of your Rememberthemilk data to tasks, scheduled synchronization, as well as the ability to sync all of your data or only portions. You’ll need to have version 4.2 or later of the Blackberry OS. More info about exactly what is synched:

The following task properties will synchronize between BlackBerry’s built-in Tasks application and Remember The Milk, using MilkSync (i.e., any changes made to these properties will be reflected both on the device and in RTM): task name, status, priority, due date, recurrence, notes, and category (known as list name in RTM).

Please note: RTM only supports “Not Started” and “Completed” statuses, so if a task on the BlackBerry has a different status (e.g., “In Progress”), this status will not sync to RTM. Also, BlackBerry only has 3 priority levels, whereas RTM has 4 (so both priority “2″ and “no priority” will show as “normal priority” in BlackBerry).

Link: Remember The Milk: MilkSync for Blackberry