Acquiring information on major global advertisers was by far the primary interest of research agencies subscribing to Warc over the course of this year.
The most-downloaded paper for researchers during 2011 was The keys to Reckitt Benckiser's success, an analysis of the health and personal care firm's distinctive brand-building strategy, written by Camillo Pane, one of its top marketers.
Also featuring on the list was There's a McDonald's for everyone in fourth place, a description of how the restaurant chain repositioned itself in the UK.
Elsewhere, a case study focusing on a campaign for M&Ms, the chocolate brand, was the sixth most-downloaded paper on the list.
Other top downloads among research agencies covered more general marketing issues.
For more details about the most popular material featured on Warc in 2011, click here.
Data sourced from Warc