I would love to see this integrated via an API into other sites, as it is definitely the fastest/cleanest image uploading & gallery I've seen to date. Some probably obvious suggestions: different views, display filesize/type info when mousing over an image, zoom in/zoom out, paid-users could have subdomains and gallery names instead of dropmocks.com/XXXX, etc. I envy your sweet design skills and attention to detail in the implementation (left/right/up/down keys work to go through the gallery, nice!). I would imagine you're aware, but be warned that trying to profitably monetize an image hosting site will be hard. Take a look into the guy who started imgur (mrgrim -- http://www.reddit.com/user/MrGrim) for useful insights on image hosting (assuming that's the route you're looking to take, and not a "YouTube Instant job offer").