[Plugin: W3 Total Cache] Big load handler

As sophisticated and buggy as it may be this plugin just keept my network site going without delay under a sudden burst of interest by users. We had something above 900 users per hour with an average usage depth of four pageloads. Usually we have 350 visitors and 1200 pageloads per day. And in this spike the site didn’t even take an additional fraction of a second to load.

http://wordpress.org/extend/plugins/w3-total-cache/