If you do not know, Flickr.com is a massive photo sharing website allowing anyone to easily put photos on the web for free and have option of letting people comment on your photos and give you constructive advice or just nice complements. Flickr.com is also a great place to find and learn from fantastic photographers. I highly recommend to any photographer to check out Flickr.com and get involved!
To really get an idea of the quality on Flickr.com, Flickr Hive Mind created by Nathan Siemers has the answer:
Nathan Siemers: “I am the author of Flickr Hive Mind, a photography database mining tool. I originally wrote Flickr Hive Mind several years ago as an experiment in the use of the modern web, web APIs, and folksonomies. I’ve continued to support and enhance the tool, which is now used by thousands of people a day to explore Flickr. Maintaining an internet web site that performs a moderately complex set of operations while getting hit 7 times a second is also a good way to keep my coding and sysadmin skills in shape.”