Why is my yahoo account sending spam emails to my contacts?

You first paragraph tells ALL. - Your friend has an email infection. The email infection sent to his contact list/address book, then it attached to your contact list/addressbook.

Where it started, nobody knows. - I had a similar malware and just had to delete Thunderbird, its contact list, and saved emails/attachments. I now check my email through my web browser.

"Here you go", "Here you are", You got to see this" are frequent subject lines of email trojans.

Dear questioner, I regret to inform you that your account has been hacked. People hack emails to spam contacts. BTW: People who hack you probably have a hacking software.

Changing your password will probably not work. Also, malware isn't always what causes this.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.