Hi jonshea:

You're assuming that the RSS feed sponsorship is sold out, and is sold out at rate card rates. Those are very aggressive assumptions. I estimated about $60,000 in annual revenue from RSS, assuming a 30% average discount to rate card rates and 75% fill rate. (Reductions of 25% to 50% are not uncommon in online advertising.)

For The Deck, founder Jim Coudal told me that $4,000 a month to the publisher is in the ballpark but a little low. So I assumed about $60,000 a year, or $5,000 a month. (Don't forget that The Deck itself is a for-profit enterprise, and takes a hefty cut.)

So I got to about $120,000 a year before t-shirt sales. Like I said... could be much higher. But I wanted to err on the side of caution, especially in this ad economy.