You can read more at
hs.fi/english/article/Whowrote ...

"A large full-page personal advertisement published in Helsingin Sanomat on page A7 last Sunday has attracted increasing interest both among readers and the media.

In the unusual advertisement, a man was looking for a blonde woman with a ponytail whom he had seen at a restaurant in Helsinki a month ago, asking her to send him an e-mail in English to the address lostyouinhelsinkigmail.com.
...."

picture of the ad:
m.flickr.com/photos/dw/3396596 ...

or here:

farm4.static.flickr.com/3654/3 ...

There was a blog lostyouinhelsinki.blogspot.com ...
too, but is was deleted this week. I don't know about the content, but it doesn't matter, we are not interested...