The functionality I described is available in MS Project 2010, and exists outside of PWA. You can enable this feature through: File/Options/QuickAccessToolbar
Select "AllCommands" from drop down menu
Add "Set Reminder" to customize toolbar (or similarily customize the Ribbon)
This adds a bell icon to your quick access toolbar or ribbon. When you highligh a task that has an assigned resource with email info, the task is delivered to the resource’s Outlook tasks. Similar functionality existed in previous version of Project, but one had to have the resource install an Outlook plug in.
The problem is I have not been able to find any indicator in Project that says if the task has been sent to the resource. Any ideas?