I just want to keep my identity here separate from my IRL identity. The more info someone can piece together to me, the more chance they'll find out who I am. It's not (at the moment) a case of having changed my mind about something I've said.

I like to go over my Reddit posts regularly to remove (or edit to neutralise) comments which haven't drawn much interest from Redditors and aren't particularly important, but which do give an extra titbit of info that could be used to identify me and isn't available in my other comments.

I enjoy the anonymity that lets me express myself more freely without having to worry about colleagues' judgements and retribution (for example).

I thought this site might operate like Reddit, where comments can be deleted and edited.

I remind you that it's not only the HackerNews regulars who can read HackerNews comments.