Mendeley now shows citation context snippets for many papers! Check out the References tab on the web record for a paper. For example:
It clearly a work in progress. The References tab doesn’t appear for all papers yet, and even when it does the reference list is sometimes incomplete. But how cool is this? Really, really cool.
Jonathan and I are busy investigating whether it is robust enough to include as a step in our data collection for a citation-context-tracking project. Maybe not yet, but soon. Mendeley is working on it and they have grand plans.
If you like this feature, consider tweeting about it with @LoveMendeley to increase fun irl :)