Flickr as a social site doesn't excite me much, but there are some interesting possibilities. I admit John Collier's photos caught my eye because I had worked with his FSA and Standard Oil (NJ) images. What I don't like is the lack of captions and metadata with the thumbnail - it's just too easy for them to get separated. One of the joys of the Stryker collections is the info that was collected and recorded, that give context to the images.
http://www.flickr.com/people/johncollierjr/
Of course, the fame of Migrant Mother (by Lange) is independent of the caption, but the difference between OWI and FSA photos is all explained in the background materials and captions. If you don't have that info, you're working blind. If that info is garbled, you're not doing too much better - here it's attributed to the FDR Library and NARA, and FDR as creator. Not! Lange shot it for the FSA, and the neg lives at LC, even if prints are all over.
http://www.flickr.com/photos/pingnews/455806594/
I can hope that, like Wikipedia, it's self-correcting, but how many people have how much time to monitor how many of these sites, before the incorrect info overtakes the correct?
But I digress. It's very cool to get the images out there, where they'll be seen and used more than at the LC site. I want a way to link them up to textual info, tho. That happens sometimes. http://www.flickr.com/photos/cobalt/352042952/
I must admit the rest of flickr strikes me as "just for my buds". I'd love to see separate tags for "taken with my cell" and "documentary". But I'm fussy about my babies.
Other mashups, like Bubbler, are cute, but bore me quickly. I'm looking forward to more "serious" uses than "this is my clean closet".