TIME WILL TELL whether the YouTubes of the world attract and keep a paying audience but in the meantime, one thing is certain: the mainstream photo-sharing sites are well on their ways to holding onto paid subscribers and attracting multiples of more of them. When talking with Robert Scoble, Thomas Hawk mentioned his work with "developers at all the photo sharing sites and that they tell him that their main problems are keeping up with the huge increases in traffic (doubling small numbers isn’t that hard to keep up with, but when you double millions of users that’s a HUGE problem to work around)".
Tip for audience developers: links from your most interesting photos feeds your other forms of content. I've three separate Flickr identities and each of them complement the separate blogs and podcasts that connect them at common points, giving a combined audience share of just under 65,000 views monthly.
Robert Scoble -- "Photo walking with Thomas Hawk" who shows at ThomasHawk.com.