Basically, a telepresence robot is a videoconferencing screen fixed on a moving base. Users log in to a telepresence robot and control it, projecting your own face on the screen.
You control the robot as it (slowly) moves around, addressing people, listening to their responses. So, it is glorified, expensive videoconferencing meets walk and talk. Good eneough for small talk and some may find the telepresence thing a bit 'impersonal'.
However big the telepresence hype, telepresence is still far way from real life, mass market use. You may have seen, or heard about telepresence robots moving around teh floors of annual CES trade show. Events and schools come to mind as probable uses for telepresence systems.
Best telepresence system to try anyway: Suitable Technologies Beam Enhanced (stable bot, clear sound, good management software)
You also get a (mandatory) training video, navigational overlay, and a self parking mode. It has dual-band Wi-Fi support (for both the 2.4 GHz and 5 GHz bands), as telepresence is dead without internet access. Its average speed is 1 mph and go to a max of 2 mph!