Blogger has done a nice job of optimizing the look of its blogs for a mobile device. If you are a blogger, definitely consider turning on the mobile optimization. You have to log in to blogger in draft mode to do it, however. (You can do this by going to draft.blogger.com and logging in to your dashboard. I don't recommend clicking the "Make Blogger in Draft my default dashboard" option, unless you are comfortable with playing with blogger settings.)
If you have a mobile device, take a look at the Once in a Blue Muse blog and tell me what you think.