[towelguy]

I see there is a leaderboard, so users have a nick, but can we contribute anonymously without signing up?

Also, why do you need access to my photos?

[cpeterso]

Yes, anonymous is the default mode. :) The nickname is optional and only used to record a leaderboard "points". The nickname is not tied to any reported Wi-Fi or location data.

Mozilla Stumbler does not need to access your photos; it just needs to read/write to your sdcard (to cache map tile graphics and export KML data). "Access your photots" is Google's unfortunate explanation of accessing the sdcard.