The correlation between wealth and Internet usage.
fastcompany.com
fastcompany.com
The bigger disproportion is in spending money online; 30% for buying products and ~35% for travel reservations. I bet buying products has a bigger disproportion if the price approaches the $1000 mark.
The lowest difference is in research ~20%. This narrower difference is likely because people are saving time, but also trying to save money. People in the lower income are likely using a greater proportion of store fliers as they're not intending on spending money online.
Anecdotally I've noticed people with lower incomes tend to be more distrustful of using credit/debit cards online.
The internet is a fantastic way to find new opportunities, those that spend more time on it have access to more and better opportunities. I could go knock on a hundred doors around my town, or I could post on craigslist, or on twitter, etc. A hundred postings on forums is far better marketing than 100 cold calls.
And anyway, how do you A/B test a cold call on the phone?
For example when I was looking for a job, I could pretty much guarantee a call a week from a head hunter if my resume was visible on Monster. It gets to the point where you don't even bother replying to job ads, you just change a setting on monster and wait for the calls to start. And yes, there are far better ways of marketing yourself than having a resume on monster.
Just today I've gotten two warm leads for iPhone apps from a two line posting on CL.
Other than postdocs (which is a temporary state), when do scientists make under 75K? Any tenure track prof at a decent/big university or private industry PhD researcher makes than that, no?