Adsense blogging using Blogspot service is bad
If you really have no choice but to use a free medium for adsense blogging, then a free blog site may just be okay, but is certainly not great and it will definitely not help your credibility. There are disadvantages which would far outweigh the upsides of using the Blogger platform.
By definition, a Blogger blog is hosted by Google. So, they effectively control it and can dictate what you can and cannot do with your blog site. For example, Google can (and do) cancel or remove Blogger blogs seemingly without reason, and so your blog can literally disappear overnight.
Blogger is relatively inflexible. Blogger is the best of your free options, but it will still cost you money that might otherwise have come from people who will not deal with someone that does not take their own business seriously, so do not use it unless you have to.
[...] btw, saat ini saya lihat pergerakan senior-senior lain yang ikutan seo contest nampaknya masih adem ayem.. saya rasa sih mereka memang sengaja tidak berbuat terlalu banyak dahulu [...]
you right, for me when i search something i will pass the result for ….blogspot.com . i always imagine the site with adsense on the top, bottom, right and left sidebar. most blogs they are using many big flash image for their ads. they do not realize that they have been stealing my bandwidth..
i think i should have my own hosting too