Happy Valentine's Day links

A dose of cynicism for Valentine's Day.

Anti-Valentine's Day cards from a bygone era, plus Vintage Valentines from 100 Years Ago and a collection of vintage meat and weapons-related cards.

The history of those chalky little pastel hearts with sayings on them. 

Video: The Science of Chocolate (aka the real meaning of Valentine's Day).

7 Aphrodisiac Cocktails to Put You in the Mood.

An animated history of Valentine's Day, plus how the heart came to be associated with love.

Horror movie-themed Valentine's Day cards and Klingon cards.

Prepare to be offended (or don't click on this link) - the Holy Crap worst Valentine's Day card ever, plus runners-up.

ICYMI, Monday's links are here, and include how wild animals self-medicate, Abraham Lincoln's birthday, advice from 1612 on preventing drunkenness, and the story behind Burt Reynolds'  nude centerfold.