Is social networking just a buzzword? Maybe, but it offers a great opportunity (and potential liability) to an organization. Here's an A-to-Z list of professional and personal social networking sites to help you network your way around the world.\n\n\n MORE ON Social Networking\n \n Discovering the Power of Social Networking Sites\n \n Tips and Advice for Writing a Corporate Blog\n \n\n\n\n\nA: Advogato\u2014free community dedicated to open-source software development\nB: Blogger\u2014popular blogging website (owned by Google)\nC: Classmates.com\u2014helps members keep in touch with classmates from school, college and military service\nD: del.icio.us\u2014a website dedicated to managing bookmarks through storing, sharing and discovering\nE: Ecademy\u2014online networking for business, offline networking events and global networking groups\nF: Facebook\u2014site once limited to connecting only college students has expanded to include the general public\nG: GuildCafe\u2014community for computer and video game players (funded by IDG Ventures)\nH: Hi5\u2014personal global social networking site that focuses on membership of young people\nI: IMVU\u2014instant-messenging software using customized 3-D avatars\nJ: Jobster\u2014social networking intersects with job searching\nK: Kwout\u2014a way to quote a part of a webpage as an image with an image map\nL: LinkedIn\u2014site dedicated to strengthening your business contacts and professional network\nM: MySpace\u2014originally focused on musicians, this general social networking site has mass appeal\nN: Nexopia\u2014formerly known as Facebox, this Belgian site is popular among young Europeans\nO: Orkut\u2014known for its easy-to-create discussion forums, this is one of the most popular sites in Brazil (owned by Google)\nP: Plaxo\u2014online platform that allows auto updates of business address book information\nQ: Quotiki\u2014a social quotes site that lets you quickly find and enjoy quotes\nR: Ryze\u2014site designed to connect entrepreneurs and other business professionals\nS: Second Life\u2014a 3-D virtual world where users can use voice and text chat to socialize, connect and create\nT: Twitter\u2014micro-blogging service focused on connecting friends, family and coworkers\nU: Utterz\u2014allows users to update their blog via short-message service (SMS) and multimedia message service (MMS)\nV: Vox\u2014blog platform built with extensive permission settings\nW: Windows Live Spaces\u2014(also known as MSN Spaces) this is Microsoft's social networking platform\nX: Xing\u2014(formerly known as Open\/BC\u2014Open Business Club) displays how each member is connected together, creating an "it's a small world" network for professionals\nY: Yahoo 360\u2014Yahoo's social networking platform\nZ: Ziggs\u2014allows users to professionally market themselves online\nOf course, there are many, many others. What social networking sites are you finding helpful professionally? What about personally?Keith Hanks received his MBA from Providence College, where he wrote "Non-Traditional Marketing Impacting Multi-Collaborative Networks." He works at Atlanta search engine optimization agency TwentySix2 Marketing.