A fancy theme vs quality content

I've noticed over the years that a lot of webmasters can
become obsessed with themes, CSS, and the overall
appearance of their web sites. Sometimes they become
so obsessed with their site's aesthetics and neglect it's
most important aspect, the content.

I won't say that a really cool theme doesn't help a site.
However, no matter how cool the theme is a theme adds
nothing that your visitors are really interested in. Look at
the search hits you get everyday. Ever seen one that
says, "websites about Alice in Wonder with a really cool
theme"?

No, of course not.

People look for things they are interested in. I won't say that
you shouldn't spend time trying to make you site look good
for your users. However, I will point out that if your site is
about making jewelry, focus on posting content about
making jewelry. If your site is legible and easy to navigate
no one will notice or care that you are using a default theme.