Reasons for a site/product not taking off are many. But I think the big reason that most sites/products fail is lack of a following.
Too many of us (myself included) spend time on things like fixing the grammar on page 156 of the ebook, or getting 12 months of content ready, or making sure things are just right. But without an audience, no one will see the first month of content and will never know about the grammar errors on page 156 because they will never see page 156.
Getting enough people that need what we are selling and who have the means to purchase it and who know, like, and trust us is, I think, the key.
What are your best tips to build that kind of following? Be as specific as possible.