I've (politely) spammed a bargain forum and a gaming forum regarding the program letting them know about the sale and explaining how good the program is.

The primary reason I've done this, is I feel you guys deserve the sales, as the program is not only quite good but you continue to improve it AND respond on the forum, I respect that behaviour from developers very much - keep it up.

Good luck with the sale, don't worry the links to the sale were done with tact.