I tweeted at Drew Wilson and Josh Long who wrote the Execute book. I had no prior relationship with them, and they were kind enough to retweet, after I let them know how the book inspired me. This triggered a lot of traffic from designers, and since some of those folks liked our design/product, it got posted to Designer News and some other galleries where it picked up more traffic.

We later got on BetaList which drove about 300 signups and a bunch of traffic to each product. That was easy, just submitted the site, and eventually got included.

I think all of that traffic converted better than usual thanks to solid design, and good communication of the core value of each product via showing, and not telling with a dry headline :-)