Ad-Breaks: germany.net was the first 'advertisement' sponsored system in Germany. I had to come up with new ideas to 'sell' advertising to our users. So I took a usual form of TV-advertising and 'translated' it into webvertising: Adbreaks. Since the users had to use our proxy, I injected adbreaks even while they were surfing on other websites. germany.net gave them the Internet for free. So users didn't complain too much about this new invention.
Payment system: The germany.net online service also offered one of the first web-based 'pay' services. I developed a payment system that could be used to 'pay as you go'. We sold software, access to news, databases and quite a lot more.