Tripsbytips is a social network for travellers and only available in German. Users can post their experiences, rate and recommend hotels and restaurants, share photos, ask other members for tips and advice if you are planning a trip and so on.
Tripsbytips was founded by Boris Wertz and Uwe Frers in May 2007.
(This article originally was written for blognation Germany. Since blognation is gone I have reposted it here)