From what I've been able to see...a spammer. All of the questions are answered with identical or nearly identical wording, and all geared toward trying to get people to go to his profile. At least, that's what I'm assuming, even though this "unpublished hub" would not be visible there. I never went to his profile, but I'm going to guess there's some kind of pitch there. I don't know...I've made a pretty good life off of internet marketing, and 100% traffic from referring sites is NOT something to brag about -- organic traffic (i.e. search engines) tends to be the cheapest, best-targeted, and least time-consuming traffic one can get. Not to mention, if one truly had written a successful article, the logical thing to do would be to attempt to duplicate that success using the same formula on other articles. Suffice to say, his approach could use some work -- give us some value and we may actually see if you have more of it to offer, spam us and we'll politely (or not so politely) decline ;).