@imran.bashirus I apologize if I confused you. I will do my best to clarify.
It is perfectly acceptable to simply create a subdirectory, as you did, for the Flexor Presell. And it is also perfecty acceptable to send your ads to that path…
http://online-internet-business.com/Flexors/
You can actually promote any and all offers you have like that, and if will work just fine.
Using subdomains is an entirely optional thing. It adds a level of abstraction. If I have multiple adds that point to “Flexor”… and then I decide to promote a similar but different product, all my ads are pointing to Flexor, and i would have to change each one. But if I use a subdomain, I just change the redirection one time, and no change is required in my ads … when the ad points to the subdomain, it will automatically go to the new redirection I established.
There are other practical reasons, but again, they are all optional.
In the case of my website, I plan to promote various MMO low-ticket opportunities, therefore, I built a blog which one year from now will be FULL of articles promoting them… and if I did my SEO right, they should gain traction and earn commissions passively. But that is 11 months down the line. I am actually modeling that after one of John’s Students, Tyler Ellison …
His blog is http://www.lifestylebreaks.com and its got affiliate articles for a variety of products. However, if you search for John Crestani on google and youtube alot, you may notice a persistent ad that always shows up… about John Crestani former student telling all? That’s Tyler Ellison, and the simple text ad points to info.lifestylebreaks.com; which goes to either an advertorial or a landing page (I think he split tests between those). So … he uses a blog for his money-pages and a subdomain for ad campaigns.
Anyhow, I hope that made sense… I’m always happy to answer any doubts.