I have been using the concept of bolding my keywords in an article on my sites and it worked for me well, bringing huge traffic. But then post panda, my sites got struck massively. There was huge junk content on it, apart from keywords in bold. But keyword density was always 2% or around.
Now i couldn't make out whether Panda penalized my sites because of the keywords being bold or whether some of its content was junk. Anyways, my traffic reduced to 30% now. But then, keyword is still bold on those articles that are performing well even after Panda and Penguin updates.
So whats with this keyword bolding, italicizing or underlying? Do they work positive or have negative effect on SEO in post panda world?
Please discuss this in detail to clarify.