When I first read the title, I thought the epidemic was of people who don't know the difference between "their" and "there". But I guess that other thing's pretty bad too.
I've learned a lot more here on the forums, than I did in school. I caught on the language skills from this forum, rather than I did in school.
I've learned the difference of their and there, how to convert btc prices back and forth, multiply and divide, comma's, from here at the forum. I still really do not understand the to vs too. I've looked it up, and it just doesn't register to me how to and when to use to and too in a sentence, I believe I don't understand the "too" part. There is a lot of other stuff I learned from this forum.