
Found on ADAM, the Art, Design, Architecture & Media Information Gateway
Gee I didn't know browsing was iconified by lightning. In my experience, it's not much like lightning... though it's occasionally shocking.
Other icons all strong except the pencil (let's save that for edit or compose, please!)-- the a for about, the heart for friends, and a great map icon.
The white/green background seems like it just confuses matters... visual noise.