I'm retired <a href=" http://www.march4freedom.org/tag/ahmadinejad-zenawi-columbia/#jewels ">revatio tadalafil vardenafil and sildenafil citrate </a> Facebook was the biggest drag on the Nasdaq 100, down5.9 percent to $47.50. Shares of TripAdvisor lost 5.7percent to $71.51 a share, and Netflix fell 4.9 percentto $302.30. Both TripAdvisor and Netflix are among the topperformers this year on the S&P 500, and Facebook is among thetop performers on the Nasdaq 100.