CainIV - 3:52 am on Oct 4, 2011 (gmt 0)
A month isn't long enough to judge results.
And any campaign will look unnatural if there is a significant flurry for one month, then nothing. That alone can dampen the effect of the links you built in my opinion.
In a genre where you are developing that much traffic, you must be generating revenue. Invest consistent revenue from the website back into link building opportunities. Guest posts, writing guides, link baiting - long term.
Find ways to ensure that users share your content in social media long term.
And continue to source out those very hard to find links in your related space and you will do fine.