I just read Duolingo's Wikipedia page. Nicely written- good info!
Regarding the language learning services of Duolingo, can students donate to the cause and, if so, is there a way to do this online?
If you translate, they earn money. The best way to support them is to translate as many articles as you can
Luis, do you actually make money doing translations or are you supported by grants?
I'm not aware of them receiving any grants. They have had ~$18 million invested in them by venture capitalists on the expectation that the translation service will make money.
Thanks OskaLingo. I was somewhat disenheartened when I saw that NEA had provided the angelisme thinking that NEA meant the US labor union-like entity called the National Education Association, a group which has absolutely destroyed public education in America. But upon researching it I found that this good NEA is New Enterprise Associates, an actual venture capital group. Good for them.