Why when I try to comment an entry, does it refuse to let me post just a couple of sentences? I see long replies but mine won't post.?

It may depend on what you are typing, or who you are typing it for. If a person has blocked you, you can't post. In the past, the answer box would simply not appear. But with the introduction of the anonymous feature, it still appears - but won't post at all when you try to submit it. Also, there may be a character limit in answers if you are using a mobile device. Or, you may have things like links or special characters that are causing a problem. Finally, there is the caching/browser issue (sign out, clear all cache, cookies & temp files and restart, or try a different browser) or the run-of-the-mill GLITCH, which happens a LOT here.