Hi, There is no exact way to find do follow blogs but you can find blog through Your Keywords "You can use these tags" Your Keywords “Powered by BlogEngine.NET" Your Keywords “Allowed HTML tags:" Your Keywords “top commenter"
Finding your niche. Start by finding out what the most popular keyword searches are in the search engines. Do a search for those keywords using RSS feed software or using a search engine - type in the keyword followed by the word blog or RSS. How many people are blogging? If the keywords are popular, there are probably hundreds or thousands of blogs in that niche already. Can you use any of those keywords and create a unique blog? If so, go for it...if not, keep searching.