Flickr updated it’s iOS app to Version 2.11.820, they added the ability to add Hashtags in your photo’s title or description. Taping on the hashtag displays all photos with that hashtag. I checked the Flickr website and the # has not been implemented there yet. I guesss they beat Facebook to adding the hashtag (that’s if it isn’t a rumor) You can grab the update from iTunes, share the news or remind a friend to update (my Wife never updates!). You can also join the Flickr weekly photo challenge by adding #FlickrFriday to your photo for more info, visit the link below.
Source: iTunes, #FlickrFriday