In popular forums, there is few thousands visitors every minutes
In your own blog, you may get about 1000 visitors daily and thats not even easy to reach. Plus if you really want to post only on your blog you have to get a real domain and not just have a blog on blogspot or wordpress etc....
And anyway It will take you lot of time before you could made regular sales from your own blog at least 6 months and that means you are really hard worker, post good , rare content, good advertise etc...
And regular sales dont mean you will earn a lot.

Just forget this idea, if you got banned from some forum it means you arent posting properly which also mean you dont have the knwoledge to run a blog properly yet.