I didn't realize quite what Leap Day traditionally meant to the single girl (though I'll definitely be sitting this one out). I found some great info and ephemera at the Leap Year Day Project Museum (or LeapZeum).
For some ridiculous reason, to which, however, I've no desire to be disloyal,
Some person in authority, I don't know who, very likely the Astronomer Royal,
Has decided that, although for such a beastly month as February,
twenty-eight days as a rule are plenty,
One year in every four his days shall be reckoned as nine and-twenty.
A paradox, a paradox,
A most ingenious paradox!
Ha! ha! ha! ha! Ho! ho! ho! ho!