From the website:

StreetAdvisor is the easy way to find out what people REALLY think about the street they live in. It’s a place where people can finally voice their opinions about where they live, have lived or simply visited!

Through detailed reviews and guidebooks (written by insiders that know best), combined with patent-pending scoring technologies, StreetAdvisor helps bridge the gap that exists about the relevant information at the street level, from neighborly attitudes to noise levels to traffic problems.
Unlike other sources of real estate information StreetAdvisor reviews are written by people in the know…. the people who live (or lived) in the street!
Imagine how much easier it would be if you could find out about the street – before you moved in. Everyone's got something to say... and share!