David the answer is No out of the box, you might try playing with
{{system.viewAsWebpageLink}} and the SM link... socially share with us if you achive something.
This is the feedburner code that marketo uses on its own emails:<div class="feedflare"> <a rel="nofollow" target="_blank" href="http://info.marketo.com/tmG42G1LHD0vL01bY0000c0"><img src="http://feeds.feedburner.com/~ff/modernb2bmarketing?d=qj6IDK7rITs" border="0" style="max-width: 90%; max-height: auto;"></a> <a rel="nofollow" target="_blank" href="http://info.marketo.com/z0GD2mv0010Yb1LcH4M1G00"><img src="http://feeds.feedburner.com/~ff/modernb2bmarketing?i=IFxttwqcf30:rqMpUKaFxCM:gIN9vFwOqvQ" border="0" style="max-width: 90%; max-height: auto;"></a> <a rel="nofollow" target="_blank" href="http://info.marketo.com/a0211v0cGH0D00NG2YbL04m"><img src="http://feeds.feedburner.com/~ff/modernb2bmarketing?d=I9og5sOYxJI" border="0" style="max-width: 90%; max-height: auto;"></a> </div>
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