Also a request if any of you are experience with it, we're interested in new ad strategies (that retain our "minimalist" approach, allowing expansion without upsetting users) so if anyone either works for an advert company or has experience at our volume (or similar) we'd love to hear from you. sam@redstonewire.com :-)
(Hopefully this is okay, I'm not a regular HN user, mainly lurk, it isn't mentioned in the guidelines but it might be one of those secret rules that are learned as you go along... be gentle!)