Here comes a quick add-on:A while ago I wrote about appear.in a free video conferencing and screen sharing service. I do have strong sympathetic feelings for these kind of startup stories. But when I actually used appear.in in my line of work (some month ago) I believe we conferenced more than 4 people together. Now when I read the details again it occurred to me that the free version of appear.in only supports up to 4 participants in a call. 4 people is not much. So I wanted to share some ideas on alternatives.The best solution I found at quick glance:  Jitsi (an open source platform for video calling and conferencing solutions).Specifically I've liked their product Jitsi Meet.It's not as easy to set up and use as appear.in but if you install the free iOS or Android app then it's a great and similar user experience.