That question is a bit open ended? but to me...
It could mean posting articles to other sites. If this is the case then you use articles to promote stuff. You always make sure you have a link to what you want to promote.
I am a full time blogger or webmaster. Whatever you like to call it. Blog posting to me is when I publish a new post on my blog. This is important because posting fresh content gets you noticed more and definitely generates more traffic. I would use the articles to promote my blog posts.