Your email address will be sent to me to allow me to reply. It is not kept.

Please solve the following mathematical problem so that we know you are a human.

Example: 2 * 2 = 4 or 0 - 9 = -9

The Brockhaus OpenID Server

This is a private OpenID server. As it is impossible to have automatic subdomains at, it will be single user only at the moment.

If you understand German and want to know, how I set up this OpenID server, read my blog post.

Grischa Brockhaus, Berlin