MikeGreat advice from Curt above,A few big cons IMO are: currency (For example the Aussie $ was $1.20 no too long ago and now its $0.80 on the USD), bank account set up (Patriot act issues) and delays with paperwork due to time zone differences.Pros, well that's easy lolGreat value, great net returns and although it mind sound corny its a once in a lifetime opportunity IMO.I definitely wouldn't be freezing my a.. in Ohio if I didn't believe this to be the case.Its summer and surfs up in Sydney hahahaThanks

@Jeff Johnson , I also have a small, speculative portion of my investment portfolio - right now, it is all tied up in bitcoins, litecoins, peercoins, terracoins, and feathercoins (cryptocurrencies).

Improving infrastructure, short term (4 to 5 years) growth potential, tax free income, currency being pegged to the dollar, are some of the pros of investing in Dubai.

Most financial services firms just sell stocks, bonds, and funds, however, so that is all they design their plans to invest in.With a truly self-directed Solo 401(k), the plan can invest in things like real estate, syndications, venture capital, cryptocurrency, etc.In the case of real estate investing, it is not "you buying the property" using plan funds. 

Treasuries offer zero protection against currency debasement.

The US is 23 trillion in debt (on balance sheet), we are the largest debtor nation in the history of the world, the US has a wildly inflated standard of living because of the USD status as world reserve currency, the stock market is at nose bleed levels, and the bond market has 15 trillion in NEGATIVE yielding debt. 

Due to this and the time burden of handling currency, we are looking at alternatives.

Store digital currencies in it 

I did lend money in Canada as a HML and that worked out.. as not only did I make my return I made a very nice delta on the exchange rate arbitrage IE when I made the loans the Loonie was quite low when I got paid off the loonie had jumped 10%.. but I am not an expert or a currency trader .. just a little one man HML er.. picking nice little loans in the Okanogan. but what I did not realize also in Canada the default process is not where as friendly as the US.. ergo being the bank in Canada you take on some risk that is not present as a US lender on US assets.

It's very foreign investor friendly and a great alternative for those who don't like Mexico.The properties you'd buy in Mexico or the DR are traded in USD so your exposure to the local currency will be limited, which you can see as an advantage or a disadvantage.Colombia has transformed in recent times to become a tourism powerhouse and a favorite for digital nomads.