German Media Conglomerate Axel Springer, which is next to Bertelsmann, one of Germany's most important and diversified media companies, has invested an undisclosed amount into AirBnB.

It's an unusual deal, whereby the amount invested is based on the value of advertising space taken in Axel Springer media outlets, according to various German media reports Furthermore, AirBnB offers will be included in Springer's real estate portals, such as Immonet.

This seems to be a really intresting move, because psychologically AirBnB listings are now treated as professional real estate listings