Ending words with an O

I've been in Japan all this time and in recent years I'm noticing back in the States (well, being Canuckistani I guess it is le sacrilege for me to say "back", but compared to Japan I suppose America seems sufficiently Canadian that it qualifies as a kind of "home turf") that people in the tech biz have a way of shortening a word and then sticking an "o "on its ass.

Examples

presentation -> preso
distribution -> distro (as in Linux distro)
algorithm -> algo
definitely -> defo

Any other major ones? Feel free to add them to the comments.