As administrator I can create more categories for discussions. At the moment there are only two categories, "Discussion" and "Q&A"; but there could be categories by, for example, industry sector (eg Construction/Manufacturing/Transport); or by risk exposure (eg Height, Hazardous substances, Mobile plant, Psychosocial); or even by geographic region.
Any Forum member can choose to bookmark particular categories, so they are informed whenever there is activity within them (and not be informed for any other categories).
Just a thought - but we don't want to end up with dozens of categories.

I have now set up (I think) a weekly email digest to all members, which will go out on Wednesday mornings provided there has been any activity on the Forum in the preceding week. This is all rather experimental as it required techy software knowledge (APIs !) somewhat beyond my pay grade, but I've had a crack at it so fingers crossed. If it doesn't work perfectly the first time I'll amend the settings.
Also, if you wish to NOT receive these weekly digests, you can opt out of them by editing your profile under "Preferences".

Whoops, no digest email has arrived. Either I have made an error in setting up the process, or the one-week period (each Wednesday) doesn't start until a full week has elapsed, ie: Wednesday next week. Call me over-confident but I'll assume the later and wait until Weds 22 Aug to see if we all get our digest.

I had assumed the email would include a link and I'm as surprised as anyone that it doesn't. I will try changing the settings. This will be an evolving experiment over the next few weeks!