In recent research, WatchMouse found that many of the world's largest online social networks have poor site performance, leaving users waiting for sites to load or encountering errors. Of the 104 sites monitored, the immensely popular Facebook (facebook.com) site was the worst performer; recording a slow load time and more errors than any other monitored site. Windows Live Spaces (spaces.live.com) also performed poorly while Friends Reunited (friendsreunited.co.uk) and MySpace (myspace.com) loaded well and recorded few errors. Conductors of the research, WatchMouse, is a leading supplier of website performance monitoring. Combining industry expertise with 25+ global monitoring stations, WatchMouse provides many multinational companies with independent verification of site performance.