I spend a great deal of my time with analyzing technical concepts and monitoring IT trends. Based of observation I prepare pieces of strategy advice and scenarios for coping with market dynamics.

I have just finished a paper for one of my customers to compare some “IT Mega Trends”. It was an interesting journey through a lot of publication of various analysts and vendors.
I included in my comparison e.g. (sorry, some analyst sites require user registration):

The first challenges when reading these publications and browsing these sites was finding matching terminologies. Each of them has a consistent and agreeable-sounding vocabulary. Marketing and competitive strategies departments have done a fabulous job. It took me a while to map corresponding principles and concepts.

The second challenge has been to find a consistent level of abstraction to allow comparison. These concepts span from very abstract to more or less pragmatic.

All of them address the same business problems, needs and suggest somehow similar solutions (agility, complexity, costs, business value, productivity...). But suggested architectural solution concepts differ dramatically. They are somehow based on Service Oriented Architecture (SOA) principles (see CBDI Forum or .NET Architecture Center Strategies with Pat Helland or Keith Short). 

There may be many more IT Mega Trends you may be missing here but these seem to be the most compelling ones at the moment.