Massachusetts Board of Library Commissioners is getting feedback, comments, concerns and suggestions about the VirtCat, the Virtual Catalog http://mblc.state.ma.us/books/catalogs/vc/faq.php

VirtCat is another Massachusetts catalog people can check to extend a search for a title or author in addition to checking their local library catalog. VirtCat books and other media can be reserved online for public library cardholders and held for pickup at your local branch public library's circulation desk or reference desk.

The Virtual Catalog Project
http://www.blc.org/vctf/vc.html

see also
by David Bade
Responsible Librarianship, Library Policies for Unreliable Systems
http://libraryjuicepress.com/blog/?p=363
http://worldcat.org/oclc/182552863