Exactly. Figure out the sort of thing that Google and Yahoo don't or won't do, and do that.
You can certainly leverage their marketing. For the next couple of months, the Flash universe is going to be filled with discussions of search. Google and Yahoo are going to do a bunch of marketing, and a bunch of market research, all of which you don't have to pay for. Just monitor some Flash-user forums, watch the users rave and/or complain about the new tools, and see if a niche market presents itself.
Meanwhile: Launch. Get something out there you can point to.
You can certainly leverage their marketing. For the next couple of months, the Flash universe is going to be filled with discussions of search. Google and Yahoo are going to do a bunch of marketing, and a bunch of market research, all of which you don't have to pay for. Just monitor some Flash-user forums, watch the users rave and/or complain about the new tools, and see if a niche market presents itself.
Meanwhile: Launch. Get something out there you can point to.