We can add our own features to Prosper, and Prosper won't even know about it. Call it "Prosper For The Rest Of Us"
You do realize that Prosper employees regularly read this board, right? In fact, one of the fastest and most reliable ways to bring something to Prosper's attention is to post about it here. 
(removed the shilling)
Seriously though, besides what Prosper thinks... what do you think about a browser plugin? I don't know what Prosper's reaction would be [but their reaction to Prosperreport is a clue; maybe they learned from the Dec 24 PC Response letter, dunno)...
either way, I'm not interested right now in Prosper's potential reaction.... I'm more interested in knowing whether or not this would be worth doing--i.e. the work would be useful to you.
As far as legal goes, there's a few claims Prosper could try to make (and the rebuttals)
- It defaces our site [ Defense: People know damn well what the plugin does. They clicked the disclaimer knowing what it does, and asked to download it by searching for it, going past the EULA, and installing it. Since Im only writing for Firefox... they can look at their browser population and see how many lenders stop coming to the site in IE and switch to Mozilla]
- Plagiarism [ See what happened with prosperreport. This is a community enhancement. It's not modifying Prosper functionality in any way. All it is doing is adding additional data to ONE of their ASPX pages when a lender pulls it up on their computer ]
- Hacking [ Plugin doesn't talk to Prosper. It has its own database outside Prosper which Prosper doesn't own or control ]
- Copyright/Trademark infringement [ The plugin won't be branded to the Prosper identity, and will have no affiliation with PMI, I'll spell that out in the EULA ]
- Attempt to Destroy business [ Nope. People who don't download the plugin will behave as nothing is going on. There are already other places (.org is an example) where lender behavior has changed--for the better--because lenders can communicate with each other freely about borrower activity. This is a free enhancement product which allows Prosper lenders to scrutinize a Prosper product Prosper is offering, before they buy it. If Prosper is upset that they are offering a shitty product/service, then they should do something to better it so lenders WILL want to give them money. ]
- Violates TOS of Prosper. [ Nope. .org isn't a TOS violation of Prosper, and neither would this plugin. ]