Trouble is, if you don't have the domain knowledge it's really hard to tell if what you're listening to is really condensed, specific info or meaningless blather.
A lot of times I might say something like "we did data analysis with Python, NLTK and R. The stack is on EC2 running Django with memcached and varnish serving up json and the frontend uses jQuery, underscore and backbone to render it"
To some people, that's a ton of info. To others it probably sounds like gibberish.
The same even applies to the "valley-girl" talking. It sounds like meaningless half-sentences to someone listening in, but to people who know all the social relationships being discussed there might be a lot of information going back and forth.