Hmm, not sure i have much of a success story but certainly encouraging story. I created an 80's trivia blog a few months ago and am beginning to see some decent traffic to it. I only post to the blog once a week. Its mostly for fun but in a few months time, it could be making a few extra bucks for me.
One Russian blogger claims of making $1000 a month working only 5 minutes a day on his blog. Not just from Adsense but from affiliate commissions as well. Here's his blog: http://uncommonbusiness.blogspot.com/ He has a personal blog too but I can't read it, let alone understand It's in Russian. http://davydov.blogspot.com/
I've had success with my travel blog in the past 16 months. Featured on various newspaper websites in US, UK, Canada and Australia. I'm just struggling with time nowadays, as I try and post 1 or 2 blog entries a day.
Here are my tips (although not on blogger), from the viewpoint of someone that owns an adsense revenue sharing site built on wordpress- focus on mid-high paying keywords and write a ton about it..from all sorts of angles. If you consistently blog on a subject, you'll reap the benefits of returning visitors AND search engine traffic (depending on how crowded the competition is in that niche),
I used to make $12 a day on Blogspot with 20-blogs but they deleted my blogs (yeah, all of them) , soooo no more blogspot for me.
tuckermax.com He earns over 20k a month! Not even blogging, but stories (very well written) his stories are all about 6 months old now. He updates his blog only after about a week, but people come for the stories and the forums. The forums are CRAZY! He has had a book deal that went on the NY Times Best Seller List. He Had a Tv deal with Fox, but it didnt go through but he got to keep 50K, they gave him as a retainer I think. He is back in LA working on a TV and Movie deal I think. Also he has already been signed for a sequel of his book. He is an arrogant prick (Self Admitted) And all this from a guy that was FIRED by his own father!