FLICKR PRO

Price: US$5.99 per month; US$49.99 per year www.flickr.com/account/upgrade/pro

While a free account may be enough for some, upgrading to Flickr Pro unlocks a number of additional tools and features. In exchange for a monthly subscription, you’ll receive no ads, more detailed page-view statistics, and access to Flickr’s desktop Uploadr app. Paying annually gives you additional discounts on tools such as Adobe Photoshop.