My recommendation: Vodafone Web Sessions (Score 1)

I live in Norway and work in Germany. When I need 3G coverage in Germany, I use a Vodafone "WebSessions USB-Stick". You can get one at any Vodafone store, it costs 29 Euro. That USB stick allows you to access Vodafone's 3G network, you pay for that access by either registering a credit card or buying prepaid cards and applying them to your account. Right now it costs: 15 Minutes: 0,49 € 2 Hours: 1,95 € 24 Hours: 4,95 € 7 Days: 9,95 €15 Minuten: 0,49 € The service works great. The coverage in Germany is very good. And, if you visit other countries with Vodafone coverage, you can use your Web Sessions account there...however, it is much more expensive and much more limited.