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Wow. Definitely a hard lesson in checking the obvious, eh?

Thanks everybody. Total oversight not to even bother checking what I never considered to be an issue. Now to go talk to our dev team to figure out how this even got in...

Thanks again everybody!

Matt is right - fresh, unique blog content using your targeted long-tail keywords will go a long way.

One added suggestion is to do a search using the keywords, make note of the top 10 ranking domains, and then do a "[keyword] site:[rankingdomain.com]" search to see how many times the ranking domains use the keyword and in what context.

Those domains are your benchmarks, so emulating what works but putting your unique twist on it (and not straight up duplicating it) should help get you on the right path. Make note of their meta tags, linking domains, etc. Then do them one better