Bus-tops

[Steve Green]

http://bus-tops.com/

London-centric I'm afraid, but you can submit to art to be displayed on top of these shelters dotted around London.

Can be animated gifs - obviously they'll go through some sort of vetting process, but it would be quite cool to get some Mega-city fake ads through it...

[Emperor]

Ooooo yeah, Otto Sump ads.

[Steve Green]

Yeah, the only thing I can see them being a bit fussy if it's promoting someone else's IP, I guess it could be obscure enough for them to not to make the connection - I guess if Dredd himself was on there it would be different.