OK, so these aren’t exactly SEO, but they are nerdy, geeky and awesome!
These are from and etsy shop and are available for purchase as a printable PDF.
It’s not too late, go get them and give one to the smart people in your life.
Don’t like those, here is a great collection of science themed love notes. You can even buy your sweetie a signed original Illustration for Nerds in Love
If Science isn’t your style, maybe you are more political. Ben has this great collection of Dictator Valentines available over on his site. Nothing says love like a Hitler card. Unfortunately, there’s no PDF to buy so you will have to wait until next year. http://benkling.com/valentines
Hope these help you get through your Valentines Day!