Advertising on my blog - did it work?

Since some weeks, I am trying to use LinkLift for gaining some bucks with this blog here, waiting for someone to buy a link. But nobody does so. It’s time to sum up the facts:

Regarding LinkLift, a link on my blog is worth inbetween 11 and 15 EUR, multiplied by 5 offered links. This could be a nice ammount of money.

Do you notice something? There’s that damn word ‘could’ which just crashes the whole calculation. If nobody wants to buy a link, there is no income - just like the good old AdSense times, when every now and then a click occured. Isn’t there something more meaningful out there that does NOT wreck your site or annoys visitors?