YocGroup

YOC Group, billing itself as "Europe’s leading mobile technology and media provider", is a European marketing agency that focuses on affiliate marketing, mobile advertising, mobile marketing, mobile Internet technology, mobile enabling, and mobile content (pretty mobile, eh?). They have some interesting ad formats that fall outside of the usual classic mobile banner MMA (Mobile Marketing Association) standard, the iPhone banner and the Xtra Big banner.

From the website:

The YOC Group uses self-developed scalable platforms to implement integrated mobile solutions for customers from all industries. YOC AG operates more than 500 mobile portals in Europe via a protected mobilisation platform. With a portfolio of more than 220 titles, the YOC Group has the largest premium mobile advertising network in Europe.

A pretty good overall bet if you focus on mobile in Euroland.

Visit YOC Group