Just log in every few months for a couple years to make sure you haven't missed anything
. It's never a good idea to rely on someone elses domain for email. Best $9 per year you can spend is on your own domain name.
Yup, pretty easy fix. Word docs, few thousand porn pics and movies and it starts to look like a real computer.
I guess the next step for malware could be. Checking to see when word docs were last modified and such, but it would be easy to fake that too.