I think on websites like this by sharing our experiences we are giving away our identity to anyone who may know us and those experiences.

I know that if some people I know read my posts they would automatically know it was me but the chances of them coming to this website and seeing my posts are small.

Nor can it be googled unless they are looking for it specifically, so as long as you keep your real identity and your posting here a secret and don't use screen name known to be you I can see no reason to be worried.