As many of you will know, it’s now official that Elsevier has bought Mendeley, previously a force for openness in the world of reference management. There’s some good commentary at The Scholarly Kitchen. Lots of open advocates — Ross Mounce, for example — are shutting down their accounts and moving to free alternatives such as Zotero. Unequivocal good guys at Mendeley, such as William Gunn, are painting this as optimistically as they can.