Rated 5 out of 5 stars

I've used imagezoom for years and it's steadfast and true. Regarding Google maps, I just tested google maps, zoomed all the way in and out and imagezoom played no role because of the setting in Options > Content > "Enable Javascript" (selected, checked) > "Advanced Javascript Settings" > Allow scripts to: "Disable or replace context menus" (selected, checked). This means when you are on a site like Yahoo mail or Google maps, you added functionality designed by the website.

I think most of the mapping sites slice the maps up into smaller squares (grid style, maybe 4x3), and if instead of Google maps context menu zoom you used imagezoom (you did not have the correct setting, above), you'd be zooming only one of the squares, which would have a bad result. I vaguely recall experiencing many versions ago.

This review is for a previous version of the add-on (0.3).