Advice welcome

A small favour, if anyone can grant it.

Does anyone have any clear guidelines on confidentiality issues with regards to blogging? There's a post I'd like to write, relating to someone I knew when I worked in a particular setting and they were a client there.

But at present, although I think the story is worth telling (and is fully respectful of the client), I feel uncomfortable. I think it's partially because I could do with a clear sense of where I stand in terms of confidentiality (maybe I'm wrong, but it feels like a whole different ballgame online as opposed to within the context of work itself).

It's also because the very act of writing about a client - regardless of the context - feels somehow disrespectful and, almost by definition, constitutes a breach of trust.

But I still think the story is worth telling.

As mentioned, any advice or pointers in the right direction would be most welcome.