There is an interesting website called “reddit.com”, which hosts discussions on a wide variety of topics. People post a link to some interesting webpage, and readers then make comments about it and one another’s comments. You can add or subtract “points” from postings and comments, depending on how good you think they are. They have a philosophy sub-unit, which you can see here.It is definitely worth checking out from time to time.
I hasten to advise you, though, to visit several times just as a lurker, to get a feel for the general atmosphere and the way things are done, before actively contributing. Many of the regular users are really quite sharp, and they do not suffer fools gladly! (And there are sometimes some irksome trolls wandering about.)