What is the best topic to blog for earning?

I have three blogs. One is a personal category, one is about a fiction story I'm writing and one is about website reviews, online money making sites and book, movie and other techie talks. If I'm to rank the three, I'd say, the third blog that shares about website reviews and online money making sites, gets a lot of traffic and earnings, second is my personal blog and third is my fiction story blog.

Yeah you can really earn some cash by blogging. I have a blog in Bulgarian for Liverpool, but because it's in Bulgarian the count of the users is limited. If you make a good blog in English you can really earn. Of course you should make a lot of things like chose a good topic, make a good SEO campaign, make a good Marketing campaign and then monetize it :)

Not so sure about that,but people do claim about it. but you must have some good material to write about and then monetize your blog with affiliate links. thats how it works, but its real hard work and takes a long time to set up and you must be able to generate traffic towards your blog too.

check out huffingpost.com i admire how that guy make 200 000 usd from this site monthly. I pretty much get the idea how he make his site boom. That guy is really good with SEO that he easily get 1st page rank search results for so many hot topics and issue going on globally..

blog about something you are passionate and knowlagable about! I myself have been trying to start blogging about World of warcraft, because i am passionate and i know alot about it! Just pick something you know about, but also other people will be interested in!! Hope i have helped! Mypalzadin