The off-site SEO professionals will reap the rewarding results from the faster Penguin refreshment. The Google engineers are working hard for a solution to refresh Penguin faster.
For last 11 months and 6 days, the Google users have been using Penguin 2.1. But, now the Google professionals have decided to update the Penguin 2.1. It will refresh quickly and provide more authentic data and will positively affect to the off-page optimization experts.
Those who were favoring spam on the web, have to provide quality work to be in the search category because of this latest algorithm change.
Resource by Search Engine Roundtable site.