Glen ~
Most folks are well aware that anything we post on the internet - on any website forum - is 'public'. As
Phyl stated, that's why we try to keep members 'personal' information, such as e-mail addresses, telephone numbers, etc off the public forums. It's a security issue. Aside from not posting that kind of information and the use of 'screen names' to protect our anonymity, I don't consider it risky to post general information about myself and/or my AN experiences. I post on various internet boards - some political - and avoid posting anything libelous or defamatory. I write pretty much the way I talk. Because I have nothing to hide or be ashamed about, I have no qualms about posting a recent photo with my posts. I think doing so gives my messages a slightly more 'personalized' flavor. However, 15 years ago, when I first discovered the internet - and discussion forums - I was very cautious about divulging anything I considered even slightly 'personal'. Obviously, I've changed my mind to some extent, although, like you Glen, I'm not giving away any family secrets.
In the final analysis, we each offer as much 'personal' info as we're comfortable with, never forgetting that everything we post (that gets by the moderators) is public, not private.
Jim