Two posts from 37 Signals’s blog illusttrate how to use Web 2.0 productivity services to help organize art practice.
Use a todo/checklist service to remind you of ideas you have yet to try or tasks that you need to complete for a project. Then when you return to the project after an interruption you can quickly remind yourself of what needs doing.
Use a wiki-style service to gather research materials such as images, references and notes for a project.
Although these examples are for software develoment and an academic research respectively it is easy to see how their lessons can be used to help organize art porjects.