I love that it allows me access from anywhere, so there's no need for my clients or their vendors in front of them when they're getting quotes! It also has some great analytics built into its platform which help us understand who our best prospects are - as well an how we can improve what content gets sent out next time around (we send emails with links back through QQ).
The only thing keeping this tool down right now would be if you have more than one vendor listed within your profile- then things get confusing quickly trying figure where someone else might fit along side another service provider/vendor like ours! We've been able solve most questions related directly do weddings by using these services- but sometimes those answers come at odd hours during non business days :) If anyone was looking specifically for something just to handle quote requests without having all parties.