After last week's Apple announcement, I declared HTML5 as one of the winners. Generally, I believe that mobile represents a significant change in our web usage / consumption... and HTML5 plays an increasingly important role in that experience. This certainly is true for publishers...
... and increasingly true for advertisers - who have to create units that intelligently work in different formats, locations, etc. Sprout's now allows simple creation of rich-ad units that work in both HTML5 and Flash.
The motto: 'Build once. Publish anywhere.'
Below is a demo of Sprout's 'Engage Ads' platform - showcasing the units in both HTML5 and Flash.