This is a much-needed initiative. Thomson Reuters Journal Impact Factors (available to WU users in the Journal Citation Reports/JCRweb database) have long been criticized, particularly when they are mis-used as measures of article and researcher quality by tenure-review committees, funding agencies, etc. But the Impact Factor has been around a long time and is relatively easy to obtain and understand. There are many other research assessment possibilities but none as easy to implement institutionally. This Research Impact and Evaluation guide includes links to many related resources. I don't see this blog post on the DORA site so I'll share it also: Impact Factors: A Broken System; there will probably be a lot written in the coming weeks about this.
Although not specifically related to DORA, the June 2013 issue of Elsevier's newsletter Research Trends is devoted to Research Assessment. These two articles are interesting: The use of assessment reports to generate and measure societal impact of research and The Challenges of Measuring Social Impact Using Altmetrics.