Firtsly meaningful "free" SE traffic aint free no more!
There is as much to creating good SE spam as there is to mailing from what I hear..without the jail sentences and fines though !
You certainly couldnt just copy keywords etc or sites and expect to rank anywhere..even thorough reverse engineering of a site or network would not necessarily help..there are many things to consider..and then every engine is different too..it gets harder and more expensive every day..
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