1. Facebook. www.facebook.com. Facebook. www.facebook.com.
2. Internet brands: vbulletin forum software. www.vbulletin.com. Internet brands: vbulletin forum software. www.vbulletin.com.
3. jquery the write less do more javascript library. www.jquery.com. jquery the write less do more javascript library. www.jquery.com.
4. Curalate insights: Analysis of instagram. http://blog.curalate.com/image-qualities-that-drive-likes-on-instagram Nov. 2013. Curalate insights: Analysis of instagram. http://blog.curalate.com/image-qualities-that-drive-likes-on-instagram Nov. 2013.
5. Wikipedia: Aol art image format. http://en.wikipedia.org/wiki/ART_image_file_format Dec. 2013. Wikipedia: Aol art image format. http://en.wikipedia.org/wiki/ART_image_file_format Dec. 2013.