[Begin with disclaimer about not really wanting to using this site, but using it anyway. Be sure to reference that a friend recommended the site to you - the more you distance yourself from the site, the more insecure you look, and everyone loves insecurity! Spelling is overrated - you're searching for a date, not writing a paper for your English professor, am I right or am I right?
Don't be afraid to add a lot of history about yourself. When people tell you that they don't want to hear your life story, it's because they actually want to hear your life novel!
Remember, the more you write, the better. After all "Brevity is the soul of wit" which I'm pretty sure means you should write a shit ton.]