It is not spamming... but you'd be disolving your content and its uniqueness.
We all try to write unique, practical, interesting content for our sites and we don't want to be plagirized because we would loose that uniqueness. Writing great articles frequently is what keeps people coming to your site and traffic is something we all fight for.
You do need to promote your site but you don't want your content all around.
At least, I think that's what you want... traffic to your site.
The term web 2.0 was very fashionable at one point... fortunately, we're over that now. You know, trends come and go