My recommendation is simple:
Unless you are a CPA, actuary, lawyer or some other bureaucrat, don't move to DSM. In fact, I've advised many people to move away.
The reasons are simple.
While there are both tech and brick/mortar startups in DSM, the scene isn't huge and it does have life-span issues. Startup City closed up shop this fall after 2-3 years. Gravitate--the co-working spot mentioned in the article--is the latest in a series of attempted co-working spots over the past several years.
Regular employment options are a huge concern too. DSM is government, insurance, mortgages and banking, with a handful of ag and convenience-store companies thrown in the mix. The common refrain I hear from old colleagues and family working for insurance/financial services companies is how unsatisfied/miserable they are, and how they wish there was someplace better to go.
The marketing, advertising and publishing companies shouldn't be forgotten either. (Hint: re-read that last sentence in context of the article.)
Another huge thing people don't often consider is airfare costs. DSM International traditionally has had very high airfares--so high, many companies have sent their employees to Omaha or Kansas City to catch flights, because it's more cost effective--even with mileage and hotel bills.
Ignore the hype. There are much better places to live and work than Des Moines. I now live and have my own business in the Minneapolis/St. Paul (Twin Cities) metro, and couldn't be happier. For everything the article states about Des Moines, MSP is several orders of magnitude better.