Microsoft's most senior Windows Azure development executive, Scott Guthrie, in his keynote speech on Tuesday during the Visual Studio Live event, has whole heartedly tried to encourage their MSDN subscribers to take full advantage of and leverage their Windows Azure cloud credits via Microsoft Developer Network subscriptions. Guthrie went on to ask the basic question of how many subscribers even know that by not using Windows Azure today, they're giving up thousands of dollars of free cloud credits. Guthrie pointed out that out of all the MSDN subscribers present at the event, only less than 20% where actually leveraging this benefit. The Windows Azure Benefits for MSDN subscribers vary by their specific subscription level but those maintaining a Visual Studio Professional with MSDN receive $50 in free Azure usage credits per month, those with Visual Studio Premium with MSDN get $100 in credits, and those with Visual Studio Ultimate with MSDN get $150 in credits. Doing the math, these monthly benefits add up to $750 per year, $1,300 per year and $1,850 per year, respectively. Taking and enterprise business into account who may have over 100 active subscribers, you can see how these figures add up to huge numbers. Read the full story here.