Accurate positioning of the
rule three: purification ", not greedy
rule four: focus on the density, the amount can be
density is the density of key words, many webmaster or optimization very tangled so-called keyword density! In fact as long as you don’t over the keywords stack, and in the article can.
by virtue of their own a little experience, as we sum up seven optimization regulations an excellent staff must abide by the Shanghai dragon. According to the A5 editor, AC Shanghai dragon has the network spread a commonplace talk of an old scholar, pseudo original, excessive, Liu is from a practical point of view, read for everyone.