The dollar has been falling for years now, but didn't catch the public's attention until very recently.
In 2002 the exchange rate was 1 USD : 1.16 Euros
In 2007 the exchange rate is now 1 USD : 0.68 Euros
If you want to convert some of your USD deposits to Euros or AUD, you can do it easily at many over sea banks. My mother in Taiwan has had Euros currency account for many years. If you're in the US, you can use Everbank (note: they require perm. US address).
While everyone point fingers at the Federal Reserve, I think the reasons behind the dollars' fall is far more complex. There are many articles on the web and you can read them to draw your own conclusions.
From a simplistic view:
* When the Federal Reserve raise interest rate, it makes it more expensive to borrow money, but your savings will pay more in interest. The public is encouraged to save and not spend $.
* When the Federal Reserve lowers interest rate, it makes it cheaper to borrow money, but your savings will pay less in interest. The public is also encouraged to spend more $.
Because the Federal Reserve lowered the interest rate recently, they made it cheaper to borrow US dollars, and therefore de-valued the dollar versus other currencies not pegged to the dollar. This will encourage people to borrow and spend more, and also provide some relief to people refinancing their mortgages. The down-side is that if you're saving money in cash, your dollars will be worth less and the savings/CD interest rate will be lower.
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Now, let's examine the recent run-up on real estate prices from 1998-2005. Here in Orange County a condo that was priced $130k in 1998 went to a whopping $450k value in 2005, before going down to <400k in 2006. This was our RE bubble.
In 1999, I recall my first mortgage was something like 8.25% interest. If you were borrowing $200k @ 8.25% for 30 year fixed rate loan, your monthly payment would be about $1500.
Then in the mid of the RE bubble the interest rate fell to as low as 5.5%. The same 200k loan would have a monthly payment of only $1,135.58.
Since it's cheaper to borrow money, people could afford to bid up on home prices, and consequently the real estate market bubbled. If you could only afford a $1500 mortgage payment in 1998, you could only borrow $200k. But at 5.5% interest in 2004, you could afford to borrow $270,000.
Then the sub-prime and exotic loan lenders came in and offered all kinds of ARM/adjustable loans with teaser rates. Remember the ads claiming that you could borrow $300k for a low, low monthly payment of only $xxx? Well if you read the fine print, it says the rate is only good for a limited time, then it resets.
But people didn't care. Home prices were rising and everyone thought they'd buy a home for 300k and sell for 500k. It didn't matter to them that they couldn't afford the mortgage later down the road. The lenders also became stupid and allowed "no documentation" or "lier loans". Can't afford the home on your income? No problem, put down you make $300k/year and nobody will check (duh?). The real estate market finally peaked in 2005 at ridiculous prices, and it's been falling since.
The US Government doesn't want to see all the people who bought homes at inflated prices going bankrupt, so our Federal Reserve is lowering the interest rate to make it cheaper to borrow money. That way the people who bought homes on ARM loans can afford the refinance and keep their homes. In some states like CA, your original home loan is no-recourse, should you decide to mail in the keys and walk away. The banks have an incentive to keep you in the home, instead of being handed a depreciating asset that's worth less than the loan.
The base value of a property is calculated by its potential income. That is, if the house can be rented for $1,500/month at market rate, then its base value is equal to the loan needed to purchase the property at monthly payment of $1,500/month. If it cost you $1,000/month to buy the house and you can rent it for $1,500/month, then the property is under-valued. But if it costs $3,000/month in payments to buy it, then the property is grossly over-valued.
So one might ask, why would anyone buy an over-valued house? If everyone was jumping off a cliff, would you do the same? The answer for many people, sadly, is "yes" like these guys:
http://www.nytimes.com/2007/11/16/scien ... ref=slogin
When all your friends and neighbors are getting huge appreciations on their property, and they refi to take out $ to buy shiny BMW's, it's a lot of peer pressure. Some people can't handle it intelligently and leap off the cliff too. The smarter ones, buy and flip for large profits, and exit the market quickly at start of a downturn. For example:
http://www.redfin.com/stingray/do/print ... id=1150985
Check the purchase history. The previous owner bought and sold it in 5 months in 2004, flipped it for $99,500 profit. The current owner bought it for $400k and hoped to make some $$, but will lose at least $100k because he held it too long.