Viral marketing is based on "storytelling", so we had to create a story that fits to flat-rates and is catchy enough to be viral.

Solution: the "quatsch-dich-leer" contest ('chat till you drop'). The "QDL" is a competition in continuous talking, which took place in 4 cities simultaneously. Teams of two should chat non stop, until they run out of things to say. Whoever takes a break of 10 seconds is disqualified. The last team to still be talking wins 10.000€.

After 54 hours and 15 minutes, 4 of the 40 teams were still talking with no end in sight. T-Mobile decided to give each team 10,000 euros. 

Apart from blogging about the contest, absolutely no advertising was done. International blogs played an essential role, as they are the source of many German blogs. Success did not take long. Hundreds of blogs, forums and social communties reported on the event. The number of applicants wanting to take part was enormous. Even “T-critical“ people talked and presented the event in a very positive manner, spreading the message exclusively throughout Weblogs. International weblogs played a big part as German weblogs often use them as a source.