Many Eyes Has Embeddable Visualization
You used to only be able to get a small thumbnail to "share" the visualization you found or created on Many Eyes (well, outside of taking screenshots and emailing), but Many Eyes just announced the embed feature. In the same way you can embed YouTube videos, you can embed Many Eyes visualizations. This is a really big step forward, because users can share what they've found or seen more easily and as a result, it's more likely others will become drawn in. You know, it's that whole viral marketing thing.
Just one weird thing. I had to change the single quotes in the copy and paste snippet to double quotes for the embedding to work, because my version (or all versions?) of WordPress escapes the single quotes.