I disagree. I start text chats with "hello" all the time.<p>It basically relates to channel choice. For some kinds of messages a near-real-time text chat is the right channel but async email-like flow would be entirely the wrong channel.<p>So I start a convo with "hello" to probe if the other party is available for near-real-time text chat, because away-status indicators are frequently unreliable.<p>There are also special kinds of communication needs like if I need help with something and there are 3 people who could potentially help me out on something that's a blocker for me. I then just want to probe for the first person capable of unblocking me. The protocol is then something like: "me-to-person-a: hello". wait for 5 minutes. no respone. "me-to-person-b: hello". wait for 5 minutes. no response. "me-to-person-c: hello" wait for 5 minutes. all of a sudden person b has become available and replies "person-b-to-me: hello, what can i do for you?" ...now i start chatting with person b. meanwhile, 20 minutes after my initial prompt when I'm already well into my way, discussing my blocker with person b, person c comes online and says "hello". I respond "oh, never mind: person b is already helping me out". ...person a, as it happens, is fighting a production issue and not responding to me right now, knowing that i'm a newbie developer who likely has newbie questions. fair enough, he's entirely within his rights to ignore me.<p>If instead, I just open the convo with a drawn-out description of the issue i need help with, I'm kind of stuck after firing off a message to the first person. Because now, I don't want to start wasting another person's time by "cross-posting" to a second 1-on-1 chat, as that is likely to duplicate work. In that case, to be polite, I'd have to at least wait a few hours, cross-post to a second person, and then say to the first person something like "oh, it seems like you're unavailable. actually never mind, I guess person-b might be able to help me out faster". ...this latter kind of communication is kind of awkward, and in any case inefficient.