There are many reasons why you would want to fake your location in firefox. One good reason would be "un-faking" your location on computers with no wlan cards, e.g. at work, or where there's no data available for the WLANs around you. All you need for faking is a text file (eg. /home/username/.mynewlocation.txt) somewhere on your computer with the following content:
{"location":{"latitude":50.941863,"longitude":6.958374, "accuracy":20.0}}

The path in Firefox to this file is:
file://home/username/.mynewlocation.txt

Type about:config in your location bar, confirm the warning, search for geo.wifi.url, and replace the old url (https://www.google.com/loc/json) with your new one from above. Restart firefox, enjoy your new location :-)

Explanation:
latitude/longitude => the location you want to have, go to google maps, select location, click on "Link" and use the values from the ll= parameter
accuracy => the accuracy you want to announce, in meters.

Woohoo! Finally some useful update to Google Mail. No idea how long this feature was there, I just noticed it today: 1. usage log, 2. Signing out other sessions.
Sometimes one would forget to log out from gmail at work, so the remote signout feature is a godsend. Also the log is a convenient way to see if somebody (jealous partner?) is snooping your emails.

I have been playing with Google's new web application service, which allows you to host your own projects on their servers. It's not bad, but I have some reservations about this service, especially regarding the privacy of the data. Also, currently there's a big collection of crapware on their Application Gallery including lame "We want PHP!" apps posted by some kids who can't be bothered to learn a new language. PHP is cool and all that, but i don't see how it suits to this particular service which is very much unlike anything else before.

Anyway, my hello world application is called Linkius and it's a simple bookmark manager suitable for quickly posting urls which you can then access through your mobile. This have been an itch for me for a while and is now scrached ☺

You can use http://m.linkius.net/ or http://mob.linkius.net/ to access the page, the latter is redirecting to my appspot sub-domain instead, just in case you are in China and ghs.google.com is blocked for you.

And while you are here, have a look at Santora Media: Webseitenerstellung und Webdesign für mittelständische Unternehmen sowie den Gesundheitssektor.