It's interesting how many responses are talking about how they wouldn't work for Diddy for free, yet Diddy and many others have worked in the music industry for free in order to learn the music business from the ground up, to build solid relationships and network with the top brass. Additionally, Diddy has a solid track record of several hits under his belt. He must have done something correct as this entire forum is dedicated to him and his brand of business.
It's always easier to criticize and critique when you haven't walked in that persons shoes. I invite everyone to achieve certain levels of success in their craft, profession and business and get others talking about you. At this point you would have made such an impact their your brand will be marketed even when you didn't invest or spend a dime. For more industry commentary, links, videos, resources, ebooks.
Remember to get your music contracts and music business plan asap. This way you don't have to always work for free!