This tool is a gmail contacts wrapper. It's very usefull for mutt user since it allows querying and adding contacts directly to Google Contacts.
Created attachment 226837 [details] goobook's ebuild
Uh, forgot to mention it. Website: http://code.google.com/p/goobook/
This is now in the sunrise overlay. You can find it at: http://overlays.gentoo.org/proj/sunrise/browser/reviewed/app-misc/goobook as always, once reviewed by a sunrise developer
*goobook-1.3 (29 Aug 2010) 29 Aug 2010; Markos Chandras <hwoarang@gentoo.org> +goobook-1.3.ebuild, +metadata.xml: Moved from sunrise overlay. Bug #313643. Thanks to Fabiano Francesconi (elbryan) <fabiano.francesconi@gmail.com> for the initial ebuild