I've got two simple questions but first a long statement of background 
so you know why I'm asking.  If you're in a hurry, feel free to skip to 
the questions.

== Background ==

We've got a research group on campus that has built up an annotated 
bibliography of literature in their topic of study over the years, which 
graduate students have carefully organized according to a taxonomy of 
topics.  They are happy to continue to host this bibliography online as 
a searchable database.

However, they've asked us in the library to help them think through what 
it would mean for them to help people reach the full text when available 
online (often through licensed library resources).  Supporting users at 
our institution is easy -- we can prepend the proxy server string to the 
DOI, or query our link resolver, or query our library discovery product. 
  But I'd also like to offer some options for what they could do to help 
users not at our institution.

Including a hyperlinked DOI or other publisher-provided permalink will 
allow users at other institutions who are on campus and using VPN to 
reach the resource directly, assuming their institution subscribes.  So 
while that's an easy solution, it only helps certain users.

In brainstorming with a colleague, we've come up with two other options 
that we might offer to the research group for helping users at other 
institutions reach the full text:

a) They could recommend that users install LibX and then use its "magic 
button" feature to select the citation and search for it through their 
institution's library.

b) They could build queries that go to Google Scholar and suggest that 
Google Scholar users configure "library links" in order to prepend their 
institution's proxy server link or send them to their link resolver.

While I know that Google Scholar's database includes plenty of bare 
citations (without any links to full text), I'm not sure it's big enough 
to actually include the sorts of book chapters and possibly obscure 
journal articles found in this bibliography.  But I'm content to leave 
that to the research group to experiment with.

== The questions ==

1. Does anyone have a sense of the number of institutions with 
"editions" for LibX versus the number of institutions with "library 
links" set up in Google Scholar?  I can't find full lists on the 
websites of either, but if we know that one is more comprehensive than 
the other, I'd just as soon recommend that.

2. Are there other options you'd suggest besides LibX and Google Scholar 
(with "library links") for helping people people find a library-licensed 
version of a resource when you don't know what institution the user is at?

Thanks in advance for your thoughts,