[jatorre]

Clearly noone tweets from Germany, or none activate the location

[danbruc]

That is probably because Twitter is not really popular in Germany. Looking at the numbers [1] I am still surprised because I would have expected something even lower not knowing a single active Twitter user personally.

[1] http://www.ibtimes.com/twitter-usage-statistics-which-countr...

[fizx]

If you think about it, there's not a lot you can say in German in 140 characters.

[yaph]

I'm aware that German translations of English sentences are about 30% longer, but by that logic Twitter should only be popular in countries with logographic or ideographic writing systems like Twitter is in Japan. jatorre's assumption that location is deactivated seems to be an appropriate explanation.