How come so many people are unable to spell simple words?

[TheWPCTraveler]

Cerebralbore101 said:
In a world where spellcheck is built into everything, we still have morons that can't spell. FFS. How hard is it to click on the red line and see the right spelling? Also, the differences between You're, Your, They're, Their, and There is obvious.

I'd say that while their is a problem, your wrong with you're assumptions. They're use of words are much less of a problem than the people there annoying with their wordplay.