If you wish to have a bit more privacy on the forum to freely discuss your ideas with the fear of having crawlers indexing everything you post under your profile, you may enable the anonymous mode like so:
You can read more about anonymous mode here.
This is only anonymous from the perspective of other users, non-logged-in people, and search engines. The staff can know who posted what with a bit of effort, but there are no intentions of doing that. As a privacy community, we wish to respect people’s privacy choices.