In general, you should either have the tag OR categories OR archives page indexed, the others noindexed. Having all 3 creates duplicate content issues (usually they have the same post content snippets in different order/page #s).
If you choose not to noindex them, you should mod_rewrite those URLs to looks like.com sacma.com/blog/tag/inbound-marketing/. And the /blog/ page should have a canonical set to itself to avoid dupe content.