Snip.it lets you collect what you see on the web, be it an article, video, or image, then categorize it, add your own comments, and share it. The Snip.it API, currently in version 2, is RESTful with the response in JSON. Snip.it itself features a backbone.js-powered page load structure to speed things along.
Hootsuite, one of the most popular Twitter clients of all time, announced last week it raised $165 million in a round of Series B funding. The round was led by Insight Venture Partners with participation from Accel Partners and existing investor, OMERS Ventures.