Related to '4. What is this going to cost me?' and '8. Will this site be here tomorrow?', I usually ask myself "how is this site supporting itself?"<p>There are so many free sites, I'm reluctant to invest time using a site if I don't see how they can support themselves long enough to make my time pay off.<p>Am I odd, or do others have similar concerns?<p>As a site developer, do you consider this user concern? How (or do) you address it?