I am very happy with the way GCalendar has been seamlessly incorporated into my website. I use about 10 different Google Calendars and GCalendar has made it easy to display individual calendars throughout my site and merging multiple calendars into one display. The "Upcoming Events" module has made a great little sidebar for my homepage. I am happy with the customization options available. I needed assistance getting the calendars setup and support was very quick and helpful.