An internet business model and shameless self promotion

I was surfing around today and saw a webpage of weird Ebay auctions, with people selling themselves as human billboards, etc. I had suggested something similar to a friend who was having trouble scraping up cash to buy gas. The difference is she is sculpture and a landscape architect, and I told her to sell her services (and not her person) on Ebay. She would take the winner’s design parameters and come up with sketches for a landscape design that they could implement. I think it is an underserved market, since lots of people watch HGTV and DIY and will do the work themselves, but need a professional to do the design and layout, for a price most people can afford. However, that is just me and I haven’t done the market research to see if it is a viable business plan, but given the huge fix up crazy I would think it could be very profitable. (This could also work for interior design people, and of course I have the complete idea implementation in my head.) Oh, by the way she didn’t do it, she got paid and started setting aside money to by gas, since she needs gas to drive to work more than she needs food.

Now to the shameless self promotion:
As much fun as it is getting to spout off in semi-private, I actually want people to come and read this site. So, the Ebay thing got me to thinking, once I have free time again, (it's looking like late November-ish) I should put up a thing on Ebay offering to solve someone’s problem (within reason) with the money going to the SPCA and Heart Association in my grandmother’s name (she died recently and those were her favorite charities, plus it is called freeguidance, so I can’t very well keep the money.) Besides helping a good cause, (if a bag of air that Brad Pity might have sneezed in can fetch $5, I think I can squeeze out at least $7), I can help someone and get publicity for the site. Ah guerilla marketing at it’s finest. Anybody think it is unwise, immoral, illegal, etc ? I need a reality check on this one; the world is full of people crazier than I am, so your thoughts are appreciated!