I first heard about bitcoins last fall and see them as an interesting experiment in creating a new, independent currency. From the article that was posted, I would see the collapse of that exchange comparable to the bankruptcy of Lehman Brothers that plunged the US and the world into a recession that we've still not yet fully recovered. Even though this major international investment bank went bankrupt, and several people lost millions across the globe due to the bankruptcy - people didn't stop using the American dollar. So for those who really are backing the development of the bitcoin currency, I wouldn't see this exchange collapse deterring everyone.
My view of bitcoins is more of a high risk investment opportunity. If you think it has a future, feel free to invest in purchasing them, but only purchase with the understanding the whole thing can implode and your investment will become worthless. Same as people investing in the stock market (except the stock market has a means to recover some of your losses, but not all). I tried investing during the tech bubble in the 90's, and after a year and a half, the mutual fund I invested in collapsed, and I only got 1/10th of my original investment returned. Same risk with the bitcoin.
If people obtain bitcoins with that mentality, then if it does collapse, you really are not out anything as you've already written it off. But if it does success, they have the potential to work in your favor.
Personally I plan to use online sites, like an above poster noted, to earn some bitcoin fractions (most sites pay in .01 bitcoin, which is one, one hundredth of a single bit coin), just to have a few to see what happens.
I did find it interesting the new Fox show "Almost Human" mentions bitcoins as currency used in their futuristic world.