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Digital certificates allow Web merchants to secure online communication and transactions . Should they strategically invest in developing applications that use Web services , or instead select a more tactical option that 's more inline with technology they're already using ? As the World Summit on the Information Society opens today in Tunis , Tunisia continues to jail individuals for expressing their opinions on the Internet and suppress Web sites critical of the government , Human Rights Watch said in a comprehensive new report on the repression of Internet users in the Middle East and North Africa . In addition , the enhanced GUI features make Web applications more intuitive to subscribers . This , however , may not be suitable for some users who authenticate web sessions by IP address or who do not use Clntrust for authentication , as each URL retrieved will be filled from a different proxy server .