S613: Yes, I do believe that some individuals actually ask halachic shailos on this list. Most posters try to steer them to a Rov to ask the question too.
At the same time, it is no different then what happens at various Shabbos tables or even in shul almost every day. Something is written about a halachah in the (Yated, Hamodia, name your favorite) or we learn something in the Kitzur Shulchan Aruch. We will discuss based on minhagim, what we see in practice, what our children were taught in yeshiva. If it is “nogeia l’maaseh” we ask the Rov of the shul for a psak.
As for your second question, no. I sometimes will discuss what I see here in the CR with others.