http://stackoverflow.com/ -->ask questions get answers within hour by experienced programmers--its like orkut for programmers
http://projecteuler.com/ -->take challenges of programming , optimization
http://techtarget.com/ -->techdownloads
http://www.yfrindia.com/ -->for online tests
http://www.sourcecodesworld.com/
http://www.codeguru.com
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http://www.hotcakejobs.com/
http://www.fresherscafe.blogspot.com/
http://www.careerenclave.com/
http://www.efreshers.com/
http://www.fresher-jobs.com/
http://www.jobs-freshers.in/
http://www.timesjobs.com/
http://www.freshersworld.com/
http://www.freshers-exclusive.com/
http://www.chetanas.com/
http://www.jobsforyou.com/
Upload and update ur resume regularly in
http://www.naukri.com/
http://www.monsterindia.com/
http://www.clickjobs.com/
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www.driverguide.com
www.newdrivers.com
www.driverzone.com
www.pcaware.com -->drivers listing
www.perfectdrivers.com
http://totallydrivers.com -->also guide for web devolopment on OSes
www.driverworld.uk
www.driversplanet.com
www.driverpit.com
www.driverforum.com -->forum
www.driverworld.dk/
www.driverfiles.net
www.fast-drivers.com -->free
www.helpdrivers.com
www.drivermuseum.com
http://drivermagic.co.nz/x/home -->stores directly on site
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http://www.myspace.com/
http://www.minglebox.com/
http://www.meetup.com/
http://www.batchmates.com/
http://www.yaari.com/
http://www.orkut.com/
http://www.bigadda.com/
http://www.spaces.live.com/
http://www.bebo.com/
http://www.ning.com/
http://www.bigadda.com/
http://www.fropper.com/
http://www.facebook.com/
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Business networking :
http://www.biznik.com/
http://www.peoplethatclick.com/
http://www.ryze.com/
http://www.pairup.com/
http://www.linkedin.com/
http://www.socialpicks.com/
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http://www.flickr.com/
http://www.panoramio.com/
http://www.fotothing.com/
http://www.yuntaa.com/
http://www.youtube.com/
http://www.dailymotion.com/
http://www.blogtv.com/
http://www.cylive.com/
http://www.twango.com/
http://www.ishare.rediff.com/
http://www.zoomr.com/
http://www.streamload.com/
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Hobbies:
http://www.maniatv.com/ -->to make tv show
http://www.wetpaing.com/ -->collaborative wiki
http://www.india.takingitglobal.org/ -->social action
http://www.shelfari.com/ -->book lovers
http://www.ezmo.com/ -->music sharing
http://www.last.fm/ -->music fm
http://www.broadcaster.com/ -->video sharing
http://www.cardomain.com/ -->car enthusiasts
http://www.care2.com/ -->green living
http://www.couchsurfing.com/ -->budget travelling
http://www.geni.com/ -->genealogy
http://www.ittoolbox.com/ -->IT community
http://www.dzone.com/ -->developers
http://www.motortopia.com/ -->cars , bikes
http://www.oktatabyebye.com/ -->india travel
http://www.dogster.com/ -->dog lovers
http://www.flixster.com/ -->movie ratings
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http://www.answers.com/
http://www.webmath.com/ -->maths
http://www.efunda.com/ -->for formulas
http://www.math.uakron.edu/ -->maths
www.eqworld.ipmnet.ru/en/solutions/ode.htm -->maths equations http://mathworld.wolfram.com/ -->maths
http://www.physicsforums.com/ -->physics
http://www.lightandmatter.com/ -->physics light
http://en.wikipedia.org/wiki/engineering www.etc.uncc.edu/elet_info/circuittutor -->for circuit analysis
http://www.dzone.com/ -->for developers
http://www.ittoolbox.com/ -->IT community
Books:
http://www.freecomputerbooks.com/ --> for books
http://www.cslibrary.standford.edu/ -->for standford university online library
http://www.freetechbooks.com/ --> for free tech books
http://math.hws.edu/javanotes/ -->for java programming
www.e-learningcenter.com/free.htm -->for free online tutorials
http://www.freestudy.co.uk/
www.clarku.edu/
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For more games(Mario,break) go to end of the page
