This means that if your business had a lot of outside reviews (from, say, Yelp), Places now does not count them.
They're still citations, however.
I understand this post may seem a little cryptic and incomplete — here's the full story about the Google Places change. If you want more in-depth info about how Google Places works and what it is, leave a comment!
(Sidenote: The changes may be the result of current anti-trust litigation that Google is in.)