old idea revisited.
catalog everything you own into a local app on your laptop (or whatever). include bar codes, ISBN, etc.. Tag what you want to sell and for how much.
every time you go to a cafe, you're advertising your wares. each cafe turns into a garage sale. why not just use ebay? local contact. you can talk to the seller face to face. sell services too? mylackey.com - flavor.
mturk.amazon.com is another attempt at getting people micropayments for work they can do online. its not too useful right now but it will enable a whole new class of workers. the traditional workplace continues to be eroded and morphed.
back to the local ebay app, it could be Big. I want to stick with just one dotcom idea and single signon was it, but this is equally tempting, with a more immeadiate payoff.