No, I probably have a 100 if even that. But the other ~9,900 are a nice archive of living in New York, and I get occasional requests from people (who can't find the buried download button) to use or copy a photo from some random street.
Importantly, they don't have to be portfolio level quality. Flickr is a fantastic place for photographers of all ability levels, and is especially great for those looking to learn & grow in their craft. All that's really required is a love of photography. If you care, we care.