Last year, I sold batches of PLR articles at a special price in the WSO forum. There was a limit of 40 licenses available to Warriors. Once they were sold, I started offering the remaining licenses on my site at an increased price. I'm doing nothing to drive traffic to the offer and have sold a couple licenses subsequently.
Frankly, I forgot about them, since the whole sales process is handled by e-junkie. I had a pleasant surprise yesterday when another batch was sold.
I checked my stats and one person searched me and for PLR! Just goes to show you: once you're archived on this forum, folks will find you! Hooray for Forum Marketing!