Not because they might pose a threat to forums or what not. Because for most sites I've seen, the Discord channel is usually used alongside an existing site's comment section or forums, in the same role an IRC chat room would have played in the past. That's fine. Casual discussions about everyday topics (or random internet memes) don't exactly need to be preserved for all eternity. However at the same time, I'm also seeing a lot of communities using these tools as there ONLY means of communication. For instance, a lot of video game speedrunning communities rely heavily on Discord to discuss strategies for beating games more quickly or share bugs and glitches used to sequence break stuff. And that means that someone outside these communities will now find it very hard to search out said information. I mean, how do you use Google to search for information within an invite only community? You can't. What's more, if you don't know these communities exist already (which isn't exactly a given), it means you're left out of the loop when it comes to a lot of stuff necessary to do well. So yeah, does anyone else worry about this? That a lot of good information is being lost due to the rise in invite only systems being used to discuss important topics?