1. I'm used to "nerd" having the meaning you give for "geak", with "geek" having the additional connotation of awkwardness (physical or social).

2. I think poly is symptomatic about being willing to question some major cultural assumptions, and consider viable alternatives.

4. There are a whole lot of questions which it never used to be possible to ASK, which can now be answered in minutes or less. Why are there still unanswerable questions? And no, I don't just mean rhetorical ones.