As noted, my current coding project is a mutli-gallery management tool called Metapix. Its primary goal is to help creative members of the furry fandom upload their work to multiple sites.
Part of developing software is identifying requirements - and one key requirement is which sites it needs to support in order to be useful. The fewer plugins I have to develop, the more time I can spend on each, and on the rest of the program.
To this end, I asked 101 dealers and artists at Further Confusion 2011 what sites they use to host their work, what sites they might use if it were easier (including inactive accounts), and what other sites they used to tell people about their work. The results might surprise you . . .
They're also quite fortunate for me - it looks like I could launch with 6-7 gallery plugins and a couple of notification plugins and satisfy the vast majority of users. Even four plugins would be enough for an alpha version.
Response to the basic concept was extremely positive. Almost all artists had more than one gallery, and most were irritated by having to repeat the process of posting work and journals in multiple locations. Many liked the idea of a global message center, and some wanted notifications on events like notes/messages and sometimes shouts/comments - though generally not watches or +favs.