Anyone losing long tail traffic recently?

I have a few sites which are purely whitehat with lots of unique content. These sites are one year old or older. Recently I observed that I am losing long tail traffic from these traffic by about 80%. Before my long tail keywords usually used to rank in first 3 positions of Google, now most of them have moved to the second page.

Is there any recent Google algorithm update causing this? I used to build backlinks to all pages targeting long tail keywords using only bookmarking. Is Google discounting bookmarking links? I'd appreciate if you share your thoughts.

Can you mentioned here sites or keywords & where you are promoting now. Than i can tell you.

blackhatchampion said:

Can you mentioned here sites or keywords & where you are promoting now. Than i can tell you.

Click to expand...

haha, is this guy trolling or what? He did mention where he is promoting, hint: "long tail keywords".