Ok. I assume you are monetizing with Adsense and some affiliate products(Clickbank most of the time).
If you have money for web host and domain name, I would suggest you to create a self-hosted wordpress blog. You have more control and you can sell it off at the end of the day. You can't simply sell blogspot or hubpages. Add your long tailed keyword optimized articles onto your wordpress blog. Try to optimize your blog SEO with plugin and tags.
If you are really good at writing, rewrite your articles and post them on hubpages, squidoo lenses, blogspots, ezinearticles...the list is exhausted...and leave a link of your main wordpress blog there. This is to generate backlinks as well as drive traffic to your main website.
Basically these are all the common white hat methods. All the best!