Snip.ly is a great idea in theory, especially for marketing/social media teams who spend a lot of time curating content to share from sites that aren't their own. It's nice to be able to brand our tweets and other social shares. We particularly like the feed function which automatically "snips" new content from any RSS feeds you'd like it to.
Snip.ly works on a freemium model, with only limited functionality for those with free accounts which is ok, however for what the tool does the paid accounts are priced a bit steep. In addition, we are yet to see any real results from Snip.ly so far so it's hard to really show any ROI. (Yet! I'll update this when we do)
And then, of course, there's the ethical issue; is it fair to other bloggers to display your content over theirs and use a redirect that doesn't give them traffic from your message?
We're still pretty on the fence as to whether we will continue using Snip.ly.
We initially tried out Snip.ly as a means to help us drive traffic to our content and generate more leads through our social media efforts. We're still yet to see much of a return just yet, though we do like having our brand display on our social media content.