“What is the best diet pill on the market?”
If you have time to drop by at Yahoo! Answers and type in “diet pill”, the above question appears the most.
Talking about the best diet pills available on the market, I really have no idea which brand is the best. 
My blogging pal knows better than I am; she runs a weight loss blog and always updates her blog with the most popular diet pills or the top weight loss products.