Complex sentence: On February 7,2011, the Gawker sites underwent a major design change and were quickly met with significant backlash from users, even after attempting a beta run a week earlier on Io9 was met with the same backlash.
Split into simpler sentences: On February 7,2011, the Gawker sites underwent a major design change and were quickly met with significant backlash from users. A beta run a week earlier on Io9 was also met with the same backlash.