How do I start a blog under a pen-name and maintain my anonymity. How do you then get regular readers?

blogger.com You can hide any and all of your personal info by editing the template. Bloggining your blog, by commenting on other's blogs who might have similar interests, or forums for example. You could always mention it at any opportunity (if you're indiscriminate)... check out http://the-egg-and-i.blogspot.com for an example of what I mean :) Also, if it's any good, your blog readership will grow by e-word-of-mouth

try http://www.bizzyblogz.com they keep EVERYTHING private and YOU can keep your blog entries and profile private or just friends. Blogger/Blogspot WILL give out your info if requested.

www.blogger.com is good, Don't worry about your IP address, and give a fake name at signup. To get visitors requires a lot more work, either advertising, or improving your google page rank which is determined by the number of sites linking back to yours. To do this submit articles to ezine submission services like www.goarticles.com, and others, leave comments in guest books and blogs, sooner or later your blog will be spidered by the search engines and the more you get the higher you will be in the search engines. Read up on website promotion from places like www.promotionworld.com etc..