I once tried a blog at blogspot and failed to make much from it. Anyway, I think anyone can make good money [$100 or more] with adsense from a blog at blogspot if you can generate traffic and traffic = $$$.
We can buy a new domain and publish blogspot on that new domain. But blogger can not publish the new css template to other hosting except themselve
Do you use multiple accounts? How many blogs per account? When Blogger deletes blogs, they delete the entire account. I would hate to lose 100 blogs in one shot! Here's a tip though: make sure you get emailed a copy of every blog post. At least that way, if they delete your blogs, you can easily repost the content again on a new blog.
the first time I made them I put up a lot of quality content, like 20 pages. Then I let it sit around, for the scheduled blogpost or update they will be promoted the same day. then until the next time they will be updated. this tend to give the links earned aged and thus giving authority to your blog niche. gone were the days where blogger blogs owns first pages of SERPs in Google back in 2006-2007, but do take a look at Yahoo! it has a lot more potential with the visitors from them, who are happy clickers. I know I have been scrutinized here for having many blogs and not making much of it, but they don't know that not all of my blogs are MFA's. Yes I earned 3x that money in my job and outsourcing business, I just love to fill up a few blogs here and there and talk to people who have the same interest as mine. and to those that gives me bad rep and calls me a fool for having 400+ blogs and earning around $800 - $3,000 monthly, I would like to see your adsense earnings! to you it may be seemed hard but for me an hour daily with my blogs is worth it. Also the exchange rate in my country is a killer nowadays and how much you earn from your end is doubled up 50x to mine, let's see who is a fool now???? here's a simple adsense math to the newbies in how to earn MY WAY with blogs, it'll be hard at the start but once you get the hang of it and it'll be cakewalk http://www.youtube.com/watch?v=ELpnjfhGDJE