Flickr is one of the most popular websites for posting and sharing photographs on the Internet. However, despite the application’s widespread popularity, many users are unaware of the full range of features web site offers. Flickr allows users to upload up to 20 MB a month for free. If users want additional storage and features, the application offers an upgraded Pro Account for only $25/year. To get started, simply create a profile and upload pictures using a web browser on your computer or directly from a camera phone using email. Last year, Flickr also introduced an iPad app, which was…