Buying blogs via sites like Sitepoint.com is a technique that is becoming more and more popular. I personally have purchased over 10 blogs in the past 12 months. However, there are certain rules you need to follow if you want to make good money from buying blogs.
Content is most definitely king!
Any marketing or SEO expert will tell you that content is king, but with blogs content becomes King, President, Queen and everything inbetween. I cannot stress how important the content is for a blog.
So when you are considering buying a blog please pay a lot of attention to the quality of the posts.
Link love
Buying a site with a lot of backlinks is very nice, with blogs it is vital! If you want your content to rank well in the search engines, then links are the key. When buying a blog pay a lot of attention to how many links the site has. If the blog has lots of content but not many links then this may be an indicator that the content is poor.
Non Adsense Revenue
Bloggers love Adsense! Adsense is the main source of revenue for blog owners, but any blog that relies solely on Adsense is more vunerable. It is well known that sites get banned from Adsense for reasons out of their control, so it is always good to have a backup plan. I am always willing to pay a little extra for sites that have other revenue streams.
A Base is Ace
Google is a great way of getting traffic, but it is also a very unstable method. Having thousands of loyal readers and subscribers who have subscribed to your feed is a nice solid base to build upon and a great way of guaranteeing that you are going to get solid traffic for months/years to come. I always am ready to pay extra for sites with a lot of subscribers/members.
Kickass Design
A nice design is always a plus for a blog. It is nowhere near as important as the other factors I have mentioned, but it certainly helps. Many people will judge your entire blog by its design, so be prepared to pay a little extra for a blog with a kickass design.
Dean