You must choose keywords which are having low competition and high search. Also, if these keywords are included in blog url then it is helpful to rank easily.
Blog spot and word press blogs are really helpful to improve keywords rankings, if you will post on these blog with proper optimization of your text/content it will help to improve rankings.
Any blog would be very beneficial, either it be blogger, wordpress, cold fusion, or what. I all depends on how you optimized your blog and how you create and put your content on it is what mostly matters in the end.
Wordpress is good for keywords, it's also pretty easy to use. Most webhosts have 1-click installation of Wordpress software.
Wordpress is really very beneficial for keywords ranking but blogger is also good for this you can try both..i think..
Wordpress is good but sometimes wordpress banned all the blogs. So I would like to suggest you that you should go for Blogspot because it is do-follow blog. And it is also beneficial for Keywords Ranking.
It would be a good idea to select blogs in the same niche as yourself for posting, and ensure that the comments adds value to the conversation or else they might be removed
For me it doesn't matter if the blog is powered by blogger or wordpress - ranking for certain keywords depends on how you have optimized the blog
Well, I prefer to host blog on my own website... With this, all the controls remain in my hand and with every blog updating I am updating my website as well But I have to choose one platform, I would prefer blogger, its free with unlimited bandwidth. But free image hosting limit is 1 GB (I think that is not a prime issue). Moreover, it has search engine friendly web properties which provides blogger blogs an added advantage in ranking.