Review for Provider for Google Calendar by Antony
Rated 4 out of 5 stars
However..... as per antoher review, one needs to remove previous xml linked calendars and relink using just the associated email address.... this works fine UNTIL the conx is lost then you need to go to each cal and open it and "Switch" it back, each time!!!
Bug logged by me 13/10
To create your own collections, you must have a Mozilla Add-ons account.