Everyone knows those remote conferences that start with "hello? can you hear me? is everyone there? was that XYZ? ABC, are you there? oh, this must be DEF joining us? I hear an echo! my microphone doesn't seem to work! toctoctoc!" and so forth. Fifteen minutes later, the conversation starts - a long silence, then several people try to speak at the same time, another silence, someone asks a question, someone talks for a really long time, a dog barks in the background (I once sat through a teleconference with a parrot screaming throughout the entire conversation) (the conference was with the parrot's owner), more silence, clicking and beeps (presumably people writing emails and chatting in other windows), then someone asks a banal question about something that has been discussed already (but presumably they haven't noticed because they have been busy in their other chat windows), and after two hours, a volley of good-byes. Sometimes some things get done during such conversations, but there are definitely more efficient ways of running them. If you click on "Read more", a huge and highly informative infographic will open up.
This lovely infographic (probably sponsored, I suspect, by google) summarises what can be done to make better use of everybody's time.
How to Run a Remote Meeting - An infographic by Hubstaff.com