05 16 2012 WEB PAGES WWW Part of internet which lets us see information in page form Uses links easy to go to new pages no need to type lots of web site addresses Move from page to page by clicking hyperlinks Uniform Resource Locators URLs Links to network services within HTML documents Represents hypermedia links Can represent nearly any file or service on the Internet with a URL Second part internet address of computer where data service is located Additional parts specify First part of URL before specifies method of access o Names of files o Ports to connect to o Text to search for in database Has no spaces Application Layer Protocols used by applications on a computer to communicate with the network communications software and hardware o Method of moving files between computers at two Internet connected sites FTP file transfer protocol Retrieve send files HTTP Hyper Text Transfer Protocol and browsers TCP Transmission Control protocol o Moves data from one network device to another o Part of Internet TCP IP protocol suite o Uses TCP to transfer hypertext requests and information between servers Hypertext Transfer Protocol Secure HTTPS combination of Hypertext Transfer Protocol with SSL TLS protocol Provide encryptions and secure website security testing identification of the server Used for o Banking and payment transactions on World Wide Web o Sensitive transactions in corporate information systems Transport Layer Security TLS and its predecessor Secure Sockets Layer SSL Cryptographic protocols that provide security for communications over networks such as the Internet and corporate and government networks URL Syntax http type of file domain name location of file s web server backslash then file name path or directory on server to this file DNS Domain Name System Central database systems Networked computers use IP addr Translates a computer s fully qualified domain name into an IP address PEER PRODUCTION SOCIAL MEDIA 05 16 2012 Web 2 0 internet services that foster collaboration and information sharing social media or other sorts of peer production Peer Production when users collaboratively work to create content products and services Leveraged to create much of the open source software that supports many Web 2 0 efforts Peer produced services save their sponsors the substantial cost of servers storage and bandwidth Crowd Sourcing a type of peer production Where initially undefined groups of users band together to o Solve problems o Create code o Develop services Blogs Wikis Social media User generated content sites Web based efforts that foster peer production of content Content is created shared and commented on by a broader community of users Content o Services supporting production and sharing of social media content include Video sites like YouTube and most social networks Social Media Explained Visually Blogs Online journal entries usually made in a reverse chronological order Provide comment mechanisms where users can post feedback for authors and other readers Trackbacks links in a blog post that refer readers back to cited sources o Allows a blogger to see which and how many other bloggers are referring to Senior executives from many industries use blogs Purposes marketing sharing ideas gathering feedback press response image Most mainstream news outlets have begun supplementing their content with blogs their content Blog roll a list of a blogger s favorite blogs o Not all blogs include blog rolls shaping o Offer greater depth o More detail o Deadline free timeliness Key features o Immediate and unfiltered publication o Ease of use o Comment threads o Reverse chronology o Persistence o Searchability o Tags o Trackbacks Blogosphere collective community of bloggers and those who read and comment on blogs o Can wield significant influence Can be public behind corporate firewall password protected Most offer two way dialog allows users to comment on posts Downsides disgruntled and unhappy bloggers comments can be spam employee blogging can be difficult to control public postings can live forever in an Internet search engine content pasted on other Web sites Can be hosted by third party services o Most offer combination of free and premium features Blogging software can be run on third party servers o Allows developer more control in security and formatting Value of a blog determined by o Combination of technical and social features Wikis website that can be modified by anyone Largest and most popular wiki Wikipedia Modify within a Web browser user must have edit access Value derives from both technical and social features Serve as knowledge management systems o A sort of collective corporate memory o Vital for sharing skills learning and preserving expertise even when employees leave the firm Roll back ability to revert a wiki page to a prior version o Useful for restoring earlier work in the event of a posting error inaccuracy vandalism Key features all changes are attributed complete revision history is maintained changes can be compared against prior versions and rolled back as needed automatic notification and monitoring of updates all pages in a wiki are searchable specific wiki pages can be classified under an organized tagging scheme Wiki software firms can install on their own computers Wiki online services content is hosted off site by third parties Freedom of the Wikis can be started without oversight or involvement of a firm s IT department can o collect and leverage knowledge that would otherwise be scattered throughout an organization o reduce effects of geographic distance o remove boundaries between functional areas o flatten organization communication hierarchies Corporate wikis outside the firewall o A sort of value generation greenhouse allows organizations to gain value from input from their customers and partners Starting and managing Wikis o Jump starting a wiki can be a challenge o An underused wiki can be a ghost town an orphan out of date full of inaccurate content o Some organizations employ wikimasters garden community content Prune excessive posts transplant commentary to the best location weed as necessary Social Networks an online community Enables users to establish a personal online profile communicate with others Two most dominant public social networks Facebook LinkedIn Feed an update on an individual s activities broadcast to a member s contacts or friends o The most powerful feature of most social networks o Feeds are inherently
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