Okay, so I'm building a new site (twink site) and don't have a lot of money to spend. I have a lot of picture content (stock an CD-ROMS, no custom stuff).

What would be the best investment in content? Custom shoots, videos, plug-in, games, ect.?

Once I'm up and running, I'll use the profits to reinvest, but to start out, I'd like to hear what you think is the best investment to retain users.