I'd love to know about commas too!
I use this tool to decide what I should use as the first three words and what words should come later
http://www.etsy.com/prototypes/compare. You basically type in your options and it will tell you which one is better (and breaks it down by scarcity, market gap, popularity, etc.). Of course, if you get too specific it can't provide information for you, but it's useful for deciding between ivory wedding veil and lace wedding veil for instance.