I have just created 2 new sub-categories to the Social board: One called Social > Selfies and one called Social > ssp. Threads posted in these sub-categories will, if everything goes right, NOT be included in the automated Digest emails.
Happy posting!
xoxo
wr
Edit:
In order to place a thread you’re posting in a sub-category, simply click on the «Social» thing under the title header and a drop-down menu will appear:
It’s a forum nestled under the social forum. So they’ll still be listed in Social, but you can also click on, say, Film & TV or Sports etc and it’ll take you to all the threads that are listed in that category.