The strategy won't work for people desperate for sex.
It will work for people who are sort of interested.

The strategy is
"Let's get tested 2GETHER B4 we have sex, 4 A VARIETY of STDs."

Randall Munroe
http://xkcd.com/632
http://es.xkcd.com/xkcd-es/strips/sospecha/

http://en.wikipedia.org/wiki/Randall_Munroe
http://en.wikipedia.org/wiki/Xkcd