And by that I also include Mac to PDA to Mac synchronization. Here's why.

Projects show up in GA, but only if they have been created in GA. GA does not create or maintain a separte Projects list outside of it's own database. The Projects list does not appear in iCal after syncing--it can only be inferred by the text in the [ ] brackets after a context item.

This deficiency is a big problem if, as a very large majority of people are, you are compelled to use a non-Mac platform at work. Say for example you use the Palm Desktop or some other application that creates categorized ToDo and Calendar items on the non-Mac platform and this app can sync thes items to your PDA. At work you are busy adding and completing Actions and Projects. At the end of the day you sync up your PDA.

At home, where your Mac is, you sync to iCal (have to use Missing Sync to do this-no option). The ToDo and Calendar items will sync and then on syncing GA they will show up, except, any Project you created at work will not.

The reverse is also true in that any Project created in GA cannot sync to the PDA and then to your work machine because GA has no place to push the Project list to in iCal.

Until GA can map a Project list from iCal and then sync this list to iCal it cannot be used as a cross platform solution for the GTD method.