Following are the most popular social networking sites on the Web along with many innovators. There are many more, and sites emerge and wither away all the time. For more on social networking sites, see social networking site
www.facebook.com Most popular www.friendster.com Young adults www.myspace.com Became a music site www.tagworld.com Personalize content www.tagged.com Teen groups GENERAL PURPOSE
www.cyworld.com South Korea www.hi5.com Global reach www.ning.com Create own network www.orkut.com Communities www.plaxo.com Social-based PIM www.vk.com Russia & environs www.windowslive.com Windows Live www.xanga.com Popular with teens SPECIALIZED
www.asmallworld.net Invitation only www.bebo.com Students, U.K. www.classmates.com Students, military www.geni.com Genealogy tracking www.librarything.com Online book club www.pinterest.com Photo sharing www.reunion.com Find classmates www.sixapart.com Blogging BUSINESS
www.adgabber.com Marketing www.linkedin.com People networking www.ryze.com People networking www.sermo.com Licensed doctors www.spoke.com Find people www.xing.com People networking MOBILE
www.loopt.com Find friends www.mocospace.com Meet people www.share.ovi.com Media sharing www.twitter.com Short messages.