Is it illegal for a guy in Canada (who is 25) to send nude pictures of himself to a girl (who is 17) in Detroit, MI?

Anytime you deal with a minor online you can create liability for yourself. This is not a good idea.

As a lender, would it be better to incorporate as an LLC or corporation?

Besides your LLC question, being a lender has all sorts of regulations attached. You should not begin this business without a lawyer's guidance!

What can I do legally to my ex for hacking into my email account?

"Hacking" is illegal under many Federal and State statutes. Make sure though, that you have secure passwords on your account. You will want to...

Your friend needs to talk about his business model with an Internet attorney. There will be other questions he will find as he seeks to get his...

If the ex made a threat to your friend that is blackmail, and you could file charges. However, I would suggest your step is to discuss your...

Illinois has a strong revenge porn statute. Yes, you could do both. You will want to discuss your situation with a lawyer in more detail. Use...

What can I do, do I have to go to court?

Perhaps you should also answer the letter and point to the renter. You can also speak to your renter. You will want to discuss your situation...

I was under the impression that AOL stopped billing anyone many years ago. You will want to discuss your situation with a lawyer in more detail....

It's the "someone else" that is a puzzle. You will want to discuss your situation with a lawyer in more detail. Many lawyers on Avvo offer a...

Would there be some way for me to go after him legally and get my money back?

Put a complant in with PayPal and see if they will reverse the transaction.