Good Question, Admin. Way to put me on the spot in a public forum! :)
I've got 2 new blogs over at blogger.com that I started pretty close to each other (and a 3rd one I'm deciding on right now).
Bear with me - the first one is a Quest for the best meal replacement shake - and instead of having the reviews just on my jrp.com blog, I thought I'd actually start a blogger blog and try to capture the keywords a bit.
The reviews followed afterwards. There are a lot of "MLM Company Reviews" sites out there, that have been established for quite a while. My biggest factor was this is a side/hobby project, and I simply don't have the time to start a whole new self-hosted blog and ever hope to rank against these more established ones in a timely manner.
Since this isn't one of my 'core' websites, I could use blogger, get some immediate google 'juice' by being on their platform and help improve my rankings a bit faster.
In my experience, blogger blogs start to rank rather quickly, with little backlink or off-page SEO, but they "top out" fast and it's much harder to get them to the top of the SERPs. Since this is a 'side project' I can send a bit of traffic too once in a while and am using it primarily as a creative outlet, getting modest results quickly was more important than this becoming a major time-sucker while I tried to get on page 1 against bigger sites.
I know that's wordy, but I hope that helps explain my thought process!
JP
____________________________________