It will be good to support embeds via embed.ly service.
On a related theme, Fedor, you might be interested in my plugin "Onebox Assistant", a plugin to help onebox do its job. It doesn’t change the layout, but it helps guarantee a successful crawl, a problem with VPS cloud installs.
Also take a look at the ‘tiles’ format in Topic List Previews and Fakebook, a theme for social media lovers
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