I started my own website with two seperate blogs but I also have blogs posted in blogger.com and wordpress and a business social site called IBO Social.
Lately, I've been blogging weekly on all sites. However, my main agenda is to get readers. I want the readers on my website but I find the other sites linking back to my website has driven traffic.
Mostly I blog when I have something to say that I think is important for others. So I may go a couple of weeks without anything, then all of a sudden post blogs daily.
I really like wordpress' layout and design better than blogger, however, I have more readers on blogger. IBO Social is really great. It's mostly a site for entepreneurs but I find that they really like to read posts of a different calibur besides simply sell, sell, sell. Does not take long at all to gain support on that site. Plus they share what they like around the web everywhere, so more people are likely to find your blog posts from somewhere.
Check out my site if you would like to see what I do and how I do it!
http://angelictimeswithmichelle.weebly.com
http://theconsciousdivine.blogspot.com/
http://angelictimeswithmichelle.wordpress.com/
http://www.ibosocial.com/Michelle44