@OgNasty you are right. But the discussion is more about the way to contact someone. On signal you need to have the number of the person that you want to talk. On telegram you just need the nick, and you could talk with that person without exchange your phone number. Discord, slack you only need a nickname/email too.
And I do not think it is off-topic because it is a topic about the part on the profiles page that we use to put personal contact. It is important to discuss anonymous and safe issues about those messagers =)
About the tip button, even if it was not widely used, could work as an experiment for other websites and forums. I found the twitter bot tip a very interesting experiment. On Reddit, this was widely used in the past.
Receive tips on Twitter using Lightning Networkhttps://tippin.mehttps://cointip.jp/en