Thanks both for pointing this out - I've left a comment on the blog post asking him to change "open source" to "shared source" (which is what I thought Microsof

Thanks both for pointing this out - I've left a comment on the blog post asking him to change "open source" to "shared source" (which is what I thought Microsoft call such visible but not open code). I'll give Leonardo the benefit of the doubt that he's just made an error for now...