This is a common question, commonly misunderstood. It certainly does seem like MI makes up data, since if you look at the 5 or so imputed data sets, the missing values are indeed filled in. But in fact, the point of MI has nothing to do with making up data, and everything to do merely with putting the data in a more convenient format. Read more about Does Multiple Imputation Make Up Data?
And while we're doing announcements, the Society for Political Methodology is also soliciting nominations for the Gosnell Prize, awarded to the best paper in methods presented at any political science conference:
The Gosnell Prize for Excellence in Political Methodology is awarded for the best work in political methodology presented at any political science conference during the preceding year, 1 June 2006-31 May 2007.
The Award Committee also includes Michael Crespin and Patrick Brandt.
We have blogged a fair bit about reproducibility standards and data-sharing for replication (see here and here). Some journals require authors to make datasets and codes available for a while already, and now these policies start to show effects. Read more about Data for Replications