It would kind of be like a Facebook which the users had no control over their profiles. All known associates of an individual would be linked together in a giant social network. An algorithm would flag conflicts of interest. This should make it easy to see problems with connections a step away from a public official rather than just high profile associates or close family members.
Automated alerts would trigger when individuals within a public official's group are arrested, convicted of a crime, etc. Much like Google's algorithm identifies "bad neighborhoods" of web site links, you could instantly see if a particular public official was surrounded by questionable or explicitly corrupt characters.
Most importantly this could be used to generate an easy to understand corruption score, making it simple for the public at large to understand how corrupt the individual is. Once a particular politician or official scored past a certain point they may become an outcast, finding potential campaign fundraisers and advocates avoiding them.
The migration of eyeballs away from television and old media is going to have a profound impact on the democratic political space. Imagine if a political candidates advertisements delivered via Google also contained a corruption score next to them, much like how e-commerce stores on Adwords display user ratings.