Update for 2020
I am a fan of all modes of tele-anything because I find it to be one of the two great things that electricity enables for us (the second one being refrigeration).
When talking one-to-one on the phone, all is well because there is an understood “dance” we have all learned around taking turns. But when talking one-to-many on the phone, it works well if it is a 1-way broadcast — but a teleconference is a “conference” versus a tele-pontification. Instead, the painfully chaotic dance that comes to happen on a teleconference call with many-to-many is the subject of a lot of great Internet humor, like my all-time favorite:“Why videoconferencing is useful in an all-distributed team”