How can I avoid being assigned to the tests (optout)?

You can avoid being sent to the active tests on your site by using the Optout option. Just add the #abtastyoptout=1 setting at the end of the URL. Example:

http://www.abtasty.com/#abtastyoptout=1

Using this parameter creates a cookie in your browser to store the Optout information. Consequently, if you delete your cookies, this information will no longer exist and you will once again see the tests. Perform the operation again after you delete your cookies to avoid being assigned to the tests.