DapperFox is a Firefox extension. Install and familiarize yourself with it at http://www.dapperfox.com. The extension places a Dapper logo in the Firefox address bar which, by default, is grayed out. When a user goes to a website that Dapper has either Dapps or RSS feeds for, the logo lights up in full color. At that point, the user can click the logo and see a list of available Dapps and RSS feeds.
When it launches, DapperFox downloads a list of sites for which there are Dapps and RSS feeds. This is done by accessing a REST web service on the Dapper site. The reason for doing it this way, as opposed to querying Dapper on every site a user visits is that it both faster and protects user privacy.
In order to win this bounty, you should enhance DapperFox is a number of very significant and meaningful ways. Those ways are up to you though you should clear it with us first, just so we're on the same page as to what "significant" and "meaningful" mean. Here are some ideas that convey what we're looking for: