DropBox for SharePoint now includes tagging to integrate better with SharePoint 2010 social framework
The DropBox for SharePoint application released one month ago ( for more info, visit this post http://www.silver-it.com/node/90 ) now includes the I Like It functionality.
DropBox for SharePoint is available for download on CodePlex.
The standard white icon allows you to Like a DropBox item. All the items marked with a green background are already tagged with the I Like this DropBox Document tag.
From your own DropBox or from someone else's, you can vizualize all the DropBoxes for which you have at least one item you like, the number of items you liked per DropBox and a direct link to visit it.
The item you liked appear in your colleague's activity feed
You can also easily view the DropBox liked items on the out of the box Tags & Notes page