There are rarely email addresses on a particular article, it's usually a matter of tracking down the author and finding his/her email address.
We ended up getting addresses for about half of the article authors.
We ended up getting addresses for about half of the article authors.
Source is on Github: https://github.com/yahelc/emailguesser.com
Does that make anyone else feel a bit ick at mTurk?
But I look through reddit's "What is this thing?" subreddits to try to find what the thing is. I do that to improve my skills with search engines. (Really, try it sometime. A blurry photograph of a rusty lump of metal, with no context other than "I found this in a field" makes you think hard how to find things).
3 cents is no where near enough to make me want to do this more, or to persuade me that I'm not wasting time online, but it goes in the free money jar.
I guess there's a risk that offering money puts off more people than it attracts - more people will do something for free than if you offer a tiny payment.