There are decidedly better sites to write at than blogs in general. The idea of creating articles are basically means of pointing readers towards your main content page.
Place like ezinearticles.com will allow you to write and place a link to your main source with better information.
Blogs are effective in being recognised as resources to readers, but will take about a year to generate a reputation on the internet.
Article sites are better recognised by the search engines as having valuable content for readers. Hope this helps.
Best regards Dale