Sounds like a good way to make use of old eMachines, at a large discount too.
Finally, the year of the Linux Desktop! (eMachine edition)
Mainly because it's what people knew and expected. "Other" browsers make it too easy to blame user errors on an unfamiliar environment or interface.
But most of all, it's about picking my battles. I'm there to get employees and volunteers to help vulnerable people get connected and don't want to get hung up on trying to educate them about privacy and ethics.