With the New Mac's with the intel chip you can run Windows also. In addition, you can avoid rebooting the system. Using Parallels, you can run windows in Parallels in the Mac while you can access OSX at the same time.
My opinion is buy a Mac. Although, everyone cultivates their own interest and preference.
Macs are not popular in internet cafes because they are too expensive.
A real Hobo would use a Netbook. These things are great ! slim lightweight under 2 pounds and as good as the best full size laptop 2 years ago. As long as your not a download freak/music movies etc you could easily do your blog with one of these. About 400 bucks for the good ones. Saving you 5 pounds of unnecessary labor and easer to hide.
You can even run Linux on it if you want to go FULL HOBO...
a sample > http://reviews.dell.com/2341/1618/reviews.htm
5 extra pounds removed from your pack and easy to conceal
You will start talking like James Bond.
Hobo, Andy Hobo. Double 00 from French Lick,ID
A real Hobo would use a netbook? Have you ever tried making a web site using a 9 inch screen? It's pretty much impossible. As much as I hate to admit it, a windows notebook is probable the best way to travel. The mac will work, but if it breaks you are pretty much screwed. With windows the black market on software is usually pretty good if you had to replace some programs. Linux is good as long as you don't need to use something like dreamweaver to make your web site. The third worlds are owned by illegal Window boxes. Windows still rules (bottom line)!
There are many different routes a person can choose from concerning the tech subject, even so, I prefer mac, I guess I am not a "real hobo", although I am not trying to attach my identity to a label.
PCs are still the dominant type of computer being used in the world. Because of that parts, supplies and software are readily available and much, much cheaper. If you are on the road traveling being able to maintain or repair the notebook easily seems to be a good idea. I travel with my pc Dell notebook and never have compatibility issues with internet connections or file types.