Google is... lacking when it comes to vertical or specialized searches, millions of database specific search interfaces on the web are a proof of this. Further

Google is... lacking when it comes to vertical or specialized searches, millions of database specific search interfaces on the web are a proof of this. Furthermore, I would never ever gauge the viability of an idea simply based on feedback provided by random users on a forum, no matter how biz/tech savvy they might be. You need a more robust process for evaluation your ideas that's based on actual customer data. I suggest Steve Blank's The Four Steps to the Epiphany. Good luck with your idea.