Rated 5 out of 5 stars
I installed the free version of this add-on a few days ago.
When it didn't function properly, I emailed the developer, and he replied quickly with a solution (I am running Firefox Nightly, so I needed a more recent version of Integrated.) I chose to have my Gmail, Tasks and Contacts on my page ... it works great! and save me time. I like the modifications I can make to Tasks, to make it even better. Thanks, Michael!