Multi-select problem: How does the next paragraph end?

How to start a forum
Figure out what your specific niche will be.
Since this will be your forum, it is best to pick something in which you are interested and knowledgeable. Since there are already so many forums out there, it is best to have a defined niche.

Pick from:
[A]. Remember that you don't need a dedicated posting center, although this does vary slightly by community. Part of it is that most will be girls and most of these forums are not considered gender neutral, preferring to be with people who have various interests.
[B]. You can choose one community to share, or another to market. However, it is important to remember that attracting thousands of people to your forum will be difficult.
[C]. You can start your forum by taking a percentage from your regular circle, or you can spread it out through foursquare or better yet, by handing out guidebooks. Create an account on foursquare or click on " basic group apps " at the top of your social page.
[D]. Something well-defined will help your forum get noticed by the search engines and also help attract your audience. You do not want something too general or too common in forums.
[D].