Firefox: Want to see what the net is saying about something you're intrigued by in Google Reader? gReactions, a free Firefox add-on, gives you a glimpse at what's being said on Twitter, FriendFeed, Digg and other spots with one click.
It's a fairly simple extension with no options, and only adds a single button to the bottom toolbar on Google Reader's feed items. Hit "Show comments", and you'll see at a glance what folks are posting and discussing in relation to the main link from the RSS item. It doesn't show these comments by default, which is a pretty great thing, and while it would be great to have a sorting option or two other than reverse chronological, gReactions delivers what it promises.
gReactions is a free download, works wherever Firefox does. While you're adding to your own Reader's abilities, check out our collection of custom Send To links.