I believe it's Bebas. http://typedia.com/explore/typeface/bebas

Edit: "Typeface is custom, but based on proportions in Blanch." [1]

[1] http://www.losttype.com/font/?name=blanch

I suspect that the word you are looking for is "condensed".

http://www.identifont.com/similar?2OWH

http://www.typography.com/fonts/font_inside.php?wipID=21

http://www.google.com/webfonts/specimen/Open+Sans+Condensed

Alternatively, there's also "compressed", "narrow" and "extra narrow" variants of fonts.

Ever tried http://whatthefont.com? Pretty handy, not sure if it knows this font but always good to try.

The characters are just made froms scratch, but roughly based on the proportions of Blanch Condensed. Considering making a whole typeface out of it now.