Unique website ideas?

[Diamons]

I'm looking for that one website idea that I can truly champion and drive into the market.

So far, the ONE idea I've had that was halfway plausible was running a trading service through which I would be the middleman.

You'd get features such as want lists, need lists, have lists, etc. and in addition, pictures of the items would be REQUIRED. You'd hover your mouse over the item and a picture would show up displaying the item up for trade. You'd then click a button that lets you trade.

You'd mail your items to an address given to you and include a reference # on your envelope, and we'd take over from there. You'd be able to post additional directions to the center such as "make sure items are in mint condition". On the website, you'd be able to see the status of your trade. For example, if your item was received, it would indicate that along on your control panel in the website saying the center received the item. Once both items are received, they would be sent to the appropriate parties, and both users would receive points based on speed, reliability, and integrity.

PROS
-professional middleman to take care of it for you, no more wondering how or if your trade went wrong, be updated step by step
-pictures of items up for sale REQUIRED and VERIFIED by trading center
-no extra charge
-easy to use website with lists and interaction between users
-manage your trades online with our reference numbers and be able to cancel trades halfway
-trades get mailed out ON or DAY AFTER trade received


CONS
-the money for the additional shipping would come out of my pockets, so the site will have lots of ads, BUT NO SURVEYS OR POPUPS
-trades might take 4 - 6 days longer than expected
-your trades might get lost being shipped to the trading center, and we would not be able to compensate you for that
-as of now, the trades would get sent to my house which is an apartment, (OR P.O. BOX if I figure out how to set one up) and that looks shady