justa - 5:22 am on Apr 16, 2012 (gmt 0)
start with the recommended bid and then look to drop the price after a week or so.
I found that after I lowered the bid after a few weeks I was getting more views with more clicks. It reduced my CTR but I was still using my daily budget. I liked this because I got the ad in front of more people, had more likes and still stuck with my budget.