Yes obviously!!!
It can't possibly be that they are just good at working the methods they actually do share with you. There must be some magic bullet method that's being held back from you.
A method, is a blow by blow description of how to do something. Method: "a way of doing something, especially a systematic way; implies an orderly logical arrangement (usually in steps)"
This is rarely offered in BHW.
"Build quality backlinks" is not a method. It is a piece of fluff. They may be good at doing what they do, but offering actual methods is a rarity.
http://www.blackhatworld.com/blackhat-seo/making-money/180550-how-i-made-682-one-day-keep-getting-paid.html is an example of the rarely offered methods.
Like everyone else in this thread, you have offered nothing at all constructive. Just a whole load of hype and hot air. The OP said he has paid exorbitant amounts for backlinking services many by "quality" and respected BHW members and is still suffering a lack of traffic.
The only comment on this thread that was slightly constructive was the one that suggested his content might be lacking.
The "TRICKS" comment of mine was a minor one that pointed out a simple fact. There are BH tricks that do increase traffic and these are not shared. Often because if they are shared, the methods will lose their effectiveness. This is not rocket science, nor does it take a psychology degree to understand that people want to hang on to their best advantage.
Your only comment to assist the OP was "use the searchbar!" WOW, such an inspiring and helpful offer. There are only a million posts to go through. Mostly fluff and old stuff that no longer works. But Hey, the real gold is in there somewhere.
Many methods used to work at some time in the past, but no longer do so because of a simple fact, Google and the other search engines are trying to offer quality. So they continually update to counter these effects.