Links and Resources:

FlashGameBlogs -  the latest developer blogs and game reviews

MochiLand - Great articles from developers and game industry professionals. 

Flash Rights (information by John Cooney on protecting your flash)

Newgrounds - Sponsor Review - Thread (developers rating the sponsors they have worked with)

Casual Game Blogs (aggregates lots of great blogs)

Game Portals & Different License Agreements (thread on MochiAd forums)

Shockwave-Sound (great royalty free music - good prices)

Where to sell a license (another great thread on MochiAd forums)

Interesting Articles:

How to make a succesful Flash Game - by Ira Willey (founder of AddictingGames.com)

Flash Games - 10 Ways To Make Money From Creating Them

Google takes its ad system into the video-game market (A Yankee Group study this month estimated that worldwide spending on in-game advertising will exceed $971 million by 2011, from about $78 million last year.)

Getting Serious About Gaming

MTV investing over $500 million into video games!

Q&A: Kongregate's Greer On Funding The Flash Renaissance

Flash Is Back

Other Interesting Things:

StrayForm - You can post your proposal and seek donations from people. Seems interesting, I haven't explored the site in detail.