I've been a big fan of Zecco's business model. I'd be more than happy to generate exclusive content for major providers. Any networking you can provide would be greatly appreciated.
My main brokerage is thinkorswim and that's the platform I do screencasts from.
Hopefully (crossing fingers) when I get some good traffic going I can get some advertising contracts with some financial service companies.
Disclaimer: didn't [listen] to your videos cause the I/O board on my MBP is fried and audio output doesn't work.