No, it could not replace all social media apps. As much as I love forums, other social media platforms are useful too. I begrudgingly use FB, but that's because I want to stay connected with family and friends. It seems to me some of us older people who grew up with forums are the ones that really use them. I own a forum, and I also have a group for the forum on FB. I've noticed over the last few years a decline in activity on my forum. I also noticed a decline here for interaction. But forums are important, it's a way to archive info and make it searchable. On social media, people are looking for instant gratification, and I see the same questions posted over and over 10 times a day because they are too lazy to scroll. On a forum, it's much easier to search and find the info you're looking for. Even though my gun forum has less activity, we get over 1000 unique visitors a day. Search engines direct them to the forum when they google information about that specific brand. I don't use ads or anything on my forum either. Instead, I rely on user donations to keep the lights on. And I also make and sell my own t-shirts, hoodies and hats. I find forums with all the ads annoying and won't visit them anymore. Same as when I click on a link to an article, if there's a bunch of annoying ads, they lost my interest. One downside to forums is it takes a while for people to respond. On social media, it's pretty instant. But again, in my opinion, forums are invaluable for archiving information, and I hope they never go away.