Some useful general Knowledge website:

Indiabix

indiagktime

onlinequizportal

elinxs.com

jagranjosh.com

briskinfo.com

month-wise-current-affairs-study-material

last-six-months-current-affairs-for-sbi

last-six-months-current-affairs-mcqs

http://www.quizpundit.com/current-affairs/current-affairs-march-2014.html#

http://upscportal.com/civilservices/order-form/current-affairs-books

http://www.upscportal.com/civilservices/ias-current-affairs

http://www.onlinegk.com/current-affairs/current-affairs-February-2014

http://www.gktoday.in/

http://www.news.civilserviceindia.com/