These are a few travel bloggers who have in the past or regularly disclose their income – while thousands of travel blogs are personal these bloggers are treating their travel blogs as a business (which you have to do if you want to earn passive income).

It should be mentioned that for those bloggers serious about making income – it is more common for them to run multiple blogs/travel sites rather than just one blog. It gives them additional outlets to sell advertising on. These are worth checking out for ideas and are certainly inspirational as they are making money from something they really love to do – travel of course!:
A Luxury Travel Blog: http://www.aluxurytravelblog.com –
One Step 4Ward: http://www.onestep4ward.com
Go Backpacking: http://www.gobackpacking.com
The Nerdy Nomad http://www.nerdynomad.com
Nomadic Matt: http://www.nomadicmatt.com
A Couple Travelers http://www.acoupletravelers.com

Do you know of other travel bloggers who have turned their passion into an income – with revenue made directly from their blogs? Are you making a living from travel blogging? Do you have one? Add yours here or share comments.

And there are really only a select number of posts about this topic that are extremely helpful – here are three that are among the best we’ve seen from *much* research on this topic:
1. http://jetsetcitizen.com/cheap-travel/money-travel-blog/
2. http://jetsetcitizen.com/cheap-travel/travel-blog-earn-money-online/
3. http://www.ytravelblog.com/how-to-make-money-from-a-travel-blog/

And here is an excellent resource, website that deals all about how to make money from your blog, how much to charge etc:
http://blogadvertisingrates.com/