This rather contemporary sounding term made a dictionary way back in 1998, when I was LOLing and ROFLing in chat rooms across the Internet.

This one caught on, didn't it? But only in its abbreviated form, app.

 In the old days, a computer booting up could take a minute or two as technical arcana flashed up your monitor. That's not how most computers work anymore, and slowly, I think we're losing this word. And in its more figurative meaning — go through the turning-on process — we have "spin up" and "start up."

This one has stuck. It certainly is more likely to mean the piece of software we use to move around the web than someone looking through a store.

This word has nothing to do with technology. Still. You kind of miss it, too, right? It wasn't the Teenage Mutant Ninja Turtles that initially popularized it, but rather surfers via the Howdy Doody Show. (How childhood dies.)

In the early days of both computing and the Internet, cryptography to keep people from spying on you was all the rage. For obvious reasons, both the term and idea of cypherpunk are coming back, I think. 

This is another word used primarily by newspaper columnists to discuss large, vague groups of people, as far as I can tell. It is certainly still in use, though dubiously useful.

It's still used to refer to the go-go era before the tech bubble burst, but now the preferred name for an Internet company is clearly "startup." (Especially now that many companies are going "mobile first." Someone who works for Facebook might technically work for a dot-com, but it'd be a real stretch to say an Instagr [..]

Still doing the Lord's work of inflecting text with affect. :)

If anyone tries to sell you e-tailing consulting, run! Almost no one uses this term anymore, although you do sometimes see people sometimes call Amazon an "e-tailer" instead of the preferred nomenclature "steamroller."