Good news here, the site is privately owned, and therefor completely free for use.
We regularly make backups of our database, and provide steady product updates.

If you like to contribute to our work, register and please contact us.
When you prefer to donate, to support our development, stay tuned..

Mostly, we do all out of interest for the development job.
Therefor we do not really consider this site to be commercialized.

Enjoy! :)