Whatever Addict

Grumbling about the first paragraph of http://blog.production.invision.works/how-to-manufacture-desire/ , i searched on a stack of terms along with the word addict.

I find the results a little perplexing, but i also see that some of the results are less about how habit forming something is and more about common turns of phrase. "Adrenaline junkie" occurs an order of magnitude more often than "adrenaline addict," for example. I suspect that the label "addict" has some associative logic, and then there are also some addictions that have unique labels (smoker, alcoholic). (Which have multiple meanings, so can't possibly be used as a scale measure.)

Anyhow. I got curious!
( google results without and with quotation marks )