Рейтинг 4 из 5 звёзд

To make the rating 10, please add a button to open the Address Book. It would be very useful when you want to send a page to a friend using a webpages own method.

Это отзыв для предыдущей версии этого дополнения (0.4.5.2). 

Its hard enough trying to get Firefox to open the default mail client, doing that would be even harder. The operating venders (MS especially) need to make some stranded way of doing things like that, that is reliable.