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My top keyword has been ranked well at top 5 for almost a year for Google.com, top 1 for Google.com.au, and .Ca. However, recently, its ranking downed dramatically to top 15, and top 10 for .Au and .Ca NO matter I got many good links pointed to it.
I guess that there are some filters happened here, so that I can not increase my ranking. Most of the links are one-way, and no reciprocal, no paid links, and some of them are from my own other websites.
Could you please tell me what will be the possibility for the down in ranking? if so, how can I pass the filter?
Not that this helps you any as I've been working several months on solving the problem with no luck at all.