backdraft7 - 1:51 pm on Apr 29, 2013 (gmt 0)
It's a seasonal drop...happens every year. Warm weather means more people outside and if your site is not "summer" friendly, you get the drop. Keep in mind, the global DDOS and web bot attacks are still in high gear and are predicted to increase this year. My server has been knocked down several times already. Slow server response will hurt your visitor experience and ding your conversions.
Tip if you run WP, run W3TC and lighten the load on your server.