Nothing is ever perfect. Just as how there's no device that's 100% efficient. When there are advantages, more often then none, there are some disadvantages. And this holds true for Web 3.0.
Saves time
Signing up for accounts or filling in registration forms is going to get much easier. With Open ID, there is only one account that holds all of our information. For more on this, see Hartrishen's article.
Remember Paul the Octopus? The sea creature with a sixth sense. As you type your query into the search box, you'll get predictive search results suggestions. How is this different from what Google and Yahoo or other search engines? Well the suggestions will not be keywords only, it may also suggest topics related to your search based on what you have searched previously. As you use the web, your constantly being studied by Info agents. So the next time you enter the same query in Google, you may get a different and more accurate suggestion.
Identity Theft
So with Open ID, the idea is to save time and redundancy right? Well yeah but not only does it simplify your life, it simplifies the task for hackers ! (OMG)
With only one account containing all your personal data, your social security number or IC, Bank account and credit card details, No longer will there be a need for hackers to hack your Facebook, Paypal, eBay, Western Union, and other accounts to screw your life up. All it takes now, is just one account.
With vulnerabilities such as this, does it make you wonder what else Web 3.0 will be prone too?
References:
Bright Hub, [Online], Retrieved 1st February 2011.
URL: http://www.brighthub.com/internet/web-development/articles/82954.aspx
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