Google Recommendations on Links within Widgets & Infographics
Matt Cutts has released a quick video in which he broadly recommends that you, as a site owner, go ahead and rel="nofollow" the links in any widgets you are currently using on your sites.
Within the video Cutts went on to talk about a previous video he did that goes indepth about the different types and quality of links within widgets and infographics. During our research it was clear that this was the video to help you understand if you should be using the rel="nofollow" attribute for widgets on your site.
On the flip side, if you're leveraging your own widgets to create incoming links to your site, then you need to be smart about it. Use the following detailed resource we created on the topic to ensure you aren't wasting your time:
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