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HTML 5 microdata: making content machine-readable for web design

Tuesday, January 11th, 2011

Microdata has been a particular focus area of the HTML 5 development. Essentially, microdata ( is a meta data ) that allows designers to create annotations for content in formats that are  machine-readable.

Microdata contains name-value pairs grouped together and dubbed "items".  Microdata items  have properties that provide definition to the elements they surround.

Five of the most common metadata formats:

  • Itemscope - Declares that an item is a microdata element and states that all child elements are components of the microdata format
  • Itemtype - Defines the vocabulary to be used by the microdata format.
  • Itemprop - A data element
  • Itemid - A unique identifier of an item
  • Itemref - Can reference another element on a web page using an id

Example of usage in HTML:
The following is an example usage of itemscope. In this example, all the child elements of <p> are part of the itemscope meta data.

<p itemscope itemtype="">Content goes in here</p>

Microdata can be nested to provide context. It can also create associations using common information formats--for example, group first name and last name into the annotation of a person's name:

<span itemprop="name">Tony Hawke</span>

Search engines already use the meta data or microdata of web pages to provide more context for the content of sites they crawl and rank. Google for instance already supports the following information types:

  • reviews
  • events
  • people profiles
  • products
  • business listings

SOURCE:

http://www.w3.org/TR/html5/microdata.html

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Who owns the data stored in Google’s servers?

Sunday, April 25th, 2010

Google is a behemoth. Google has become the de facto search tool for the major of web users across the world. Contributing to Google's success has been their good natured slogan of "Don't be evil," which has helped build trust with the company that has amassed an arsenal of information on user behavior and consumer trends using it's various web services from text search to online mapping and GPS targeting.

Much of Google's services are provided for free, and the company is capable of keeping it's services free by offering a very clever but refined advertising product that has been a primary source of great wealth for the search company.

Privacy concerns for the web (more generally) and Google (more specifically) will certainly increase on behalf of the general public in the years to come as security concerns increase and data interoperability expands from technology innovations.

Many have voiced concerns over Google's tremendous and expansive information warehouse that may hold the keys to user and consumer patterns, IP or geo-targeting information and significant security data. We recommend an excellent book on the subject of Google, security and confidential information written by Greg Conti titled Googling Security and published by Addison Wesley.

So, who currently owns the data that is stored in Google's servers?

Google has to-date taken the stance that it does not own your data. "To put it simply, Google does not own your data," the company states in it's Admin Basics policy section of it's website.

Keeping user provided data secure and private is extremely important for Google and is at the core of it's business model to "organize the world's information." Without such user trust and confidence, businesses, advertisers and common users would begin to shy away from using the search giant.

Their ownership agreement outlines three basic concepts:

  • That Google does not share your data with others ( Their privacy section more clearly outlines who is and is not considered an outsider.)
  • That they keep your data only as long as you require.
  • That your data is yours to take: you may either stop using Google's services and take your data to another provider or use another provider in conjunction with Google.

Source:
Who owns the data that organizations put into Google Apps?

http://www.google.com/support/a/bin/answer.py?answer=106876

Google Privacy:

http://www.google.com/privacypolicy.html

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