I was using MP3s way before they were mainstream, my friends were asking me where did the music come from...
I was also doing my first web ads when CDNOW was a thing, I was getting many free CDs from them and lots of credits, Amazon bought them soon after:
In April 1998, during the dot-com bubble, the company was valued at over $1 billion. In July 2000, it was acquired by Bertelsmann Music Group for $117 million; shortly thereafter Amazon was contracted to operate the website.
Maybe a few other things I forget...