Full disclosure:

None of the trim virginal-looking socks featured in this advertisement are actually single. Significant-other-socks were asked to wait patiently on-set and were given Evian and a fresh pair of sneakers to slip into.  The older, worn-out *and truly single* socks that more accurately reflect real-life online dating clientele were given to Goodwill.

Ready to donate yours? http://www.goodwill.org/get-involved/donate/