If you can manage 10 or 20 or 100 blogs, with no tricks, i mean: unique content, not just a few posts but real blogs, etc. Google dosent care and dont penalize you.
I dont see any reason why the Big G would ban you for creating 50 blogs (blogger accounts) - ofcourse, you need to have unique content with specializing in different niches. But managing 50 blogs on a regular basis is a real headache, right?
Dear baker101, Why you are you risking your adsense account by putting on the 50 blogger accounts in the one gmail. Try to get blog farm generator this will help you in getting the high ranking in the search engines which will ultimately help in bringing more traffic. setting up an effective blog farm can help you achieve mor ethan 50 dollars per day in the Adsesne Business Regards Tehmina
baker101: It's a great way to get banned, if you plan to create 50 blogs manually on blogger, don't put more than 3-4 blogs/account.