Where should I register my business?

I live in the U.S., but I'm travelling all the time and I really don't offer any physical goods, no inventory etc. So there is no shipping involved, etc. However, I am creating sites here in the USA at the moment.
Should I register my business here in the USA, or should I look into other countries like costa rica, panama or the virgin islands? What are the advantages of registering my business over there? Any experiences?
Thanks! any advice will be greatly appreciated.

Probably register business in a tax-free state when it comes to mind. I'm originally from a taxed state and have a friend living in a tax-free area, and put him as my registered agent. Easy and cheap yearly.

Registering a business outside the states might be more difficult due to you not being a local and might have to jump through loops to do it. No experience with this so can't comment too much.

Hope this helps.

Since you live in the USA you should setup your company there.. you may setup a Delaware or Nevis corp. to avoid to pay corporate taxes. but before you are doing this you want to consult a local tax firm and not BHW

Yeah there are most likely a bunch of laws in place that only the big companies can circumvent ;-)
I know that there are tax-havens in Europe, and trade agreements with tax havens between certain countries but even there you need some kind of 'presence'. Be sure to research this very thoroughly because the last thing you want is the IRS coming down on your for tax evasion.

Your revenue will play a big part as well. Anything under $300.000 won't be worth the risk IMHO.

No matter what you do .. You cannot escape the IRS if you are a US citizen. setting up companies offshore also will do no good so why not set it up in US .. check delaware they have good options. Rest the experts will tell .. my personal experience was not that good when setting up offshore in Belize.

An infographic from Designhill explain that USA is the best place to start a business where you can register your business. The infographic shows that Austin, Texas and Miami, Florida are the best places for business. So, Registering a business in these places will help you great for the growth of the organization.