The main purpose of the blog will be attract visitors...like a traffic channel. I mean the blog (by its nature) will probably rank better in the search engines than the main site. People may find out about the blog first, read some stuff there (mind you, I plan to post usuful, quality stuff there) and then hopefully click on the links that lead to the main site (which is a membership site).
My question is: Am I better off registering a separate domain name for the blog? Or shall I just install the blog under the main site?
The blog will contain posts both about the main site (updates, news, etc), but also more general stuff, tips, revews, etc. So, there are really two target groups for this blog: my customers and prospective customers. That's why I don't know if I should install it under its own domain name, or just create a directory under the main site.
What would you recommend from a marketing, branding point of view?