My guess is that it's not as well-known? The same could be said for the FEC site in general, or the various state election sites that publish voter registration

My guess is that it's not as well-known? The same could be said for the FEC site in general, or the various state election sites that publish voter registration info. And also, it's not particularly impactful compared to what already exists. For example, I can much more easily find much more personal info about myself by googling my name (even without using the `site:insert-favorite-people-directory.here.com` search operator). Google aside, I'd agree that most people hate the various people-directory sites, which means that they might also hate another aggregator, like the Public Accountability site in question. But I'd still argue that the features/scope of this site is much different and significantly limited compared to a people-directory site. The former presents a list of records retrieved via a full-text search for "John Doe". The latter purports to link data from a variety of sources to a given identity, ostensibly using a unique personal identifier (e.g. social security number). It's much different to have a list of "records containing the string 'John Doe'" versus a list of "John Doe" entries comprising of personal history (like age, past addresses, and family members).