Hello Prostock
Thank you very much for your feedback. This is very important so we can make this website even better. We are already aware of this problem as it can be quite confusing. However, due to some technical and security reasons we have not implemented it yet. The best way to log off at the current website configuration is either from your profile or the forum where the relevant links are provided. We will try making this process easier in the future but I can not promise on when this will be solved.