I was married when I was 3 months shy of my 19th birthday. We dated when I was in High School (we met at church and he was about to attend ministry college), and he asked me to marry him a few months after I graduated...right around my 18th birthday. My husband and I went to college together, pastored together, and weathered leukemia together. (He died one month after our 7 year anniversary.)
It's not about age as much as it about maturity and what you want out of life. Some women can't pick a good man no matter what age they find themselves...largely, because they don't like and respect themselves (so they settle for jerks and abusers).
I say follow your heart, not someone's personal experience or some set of external "appropriate" rules that someone made up. <img src="/images/graemlins/tongue.gif" alt="" />
Btw, I spent about 10 months as a widow and re-married. We'll be celebrating our 7 year anniversary on August 7th. <img src="/images/graemlins/smile.gif" alt="" />