I found that if you put random question that involve your product you will find more and more people. I usually ask questions like "What diaper is your little one wearing right now?" and I get a couple more responses each time.
As for other type of "likers" I don't have any major ideas, I guess just word of mouth.
I have a facebook fan page, I would really love to see some more traffic on it! http://www.facebook.com/KissingBunniesCloth