There appears to be no limit to how many links can be added within the “About Me” form, in my test I added 16 links to one of my sites and was able to add a rel attribute at the start of the URL: Gravatar adds a rel=”nofollow” attribute at the end of the link code.
My initial plan was to delete this content after publishing this article, but worth running a short SEO test to see how Google handles the two separate rel attributes: if Google ignores the second rel attribute (highly unlikely) we have a dofollow link.
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