See someone you really like but too shy to do anything about it? Place an
I Saw You ad in the personals column; with any luck they'll see it and get back to you (via the publication, so it can be completely anonymous).
I've noticed that in The List, Glasgow and Edinburgh's answer to Time Out, a lot of the seen people are spotted in the same place that free ad placement forms are available. Nevertheless, I'm sure there are some genuine entries...