But not great enough clients to actually buy advertising

Ad on a Canada Line Skytrain

It is a bit sad when the firms that sell advertising space have to use some of that space to tell you that it would be a really good use of your advertising budget to buy their space. (And are the media buyers really taking the Skytrain?)

I've mentioned this before, but if you have enough unsold space that you can use it to advertise yourself, then either your sales team is doing a poor job, your prices are too high, or advertisers think that no one is paying enough attention to the advertisements.

The more I see of this sort of advertising, the more I think that conventional media is dying. I just wonder what will ultimately replace it, and how the effectiveness of those media buys will be measured.