Use of link buttons on the home page to what are known as social networks Our home page contains link buttons to the Internet offer from Facebook, Twitter, Google+ and XING (hereinafter: social networks or access providers).
The link button to the Facebook social network, operated by Facebook Inc., 1601 South California Avenue, Palo Alto, CA 94304, USA, can be identified from the white letter 'f' on a blue background.
The link button to the Twitter micro blogging service, offered by Twitter Inc., 795 Folsom St., Suite 600, San Francisco, CA 94107, USA, can be identified from the white bird on a blue background.
The link button to the Google+ social network, offered and operated by Google LLC, 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA, can be identified from the white letter 'g' and a plus sign, both on a red background.
The link button to the XING careers social network, offered and operated by XING AG, Gänsemarkt 43, 20354 Hamburg, can be identified from the light green and dark green stylised letter 'X'.
The link button to the YouTube social medium, operated by YouTube, LLC, 901 Cherry Ave., San Bruno, CA 94066, USA (YouTube), can be identified from the red and white symbol.
When you click on one of these buttons you are linked by our relevant site to the social network you have selected. If at the same time you are logged into your account with the selected social network, your visit to our site can be assigned to your user account. Irrespective of which social network you have selected, you also have the possibility, for instance of following one of our sites and thus obtaining current information from us or sharing this information with other participants in the respective social network. Further notices on the use of social media are available for:
Facebook on http://www.facebook.com/legal/terms
Twitter on support.twitter.com and twitter.com/tos
Google+ on www.google.com/intl/de/policies/terms/
XING on www.xing.com/help/
Youtube on: www.google.de/intl/de/policies/privacy
It you do not want the respective access provider to be able to assign your visit to our website to your user account with them, please log out of that account prior to visiting our site.