
StumbleUpon has launched a new URL-shortening service to compete with Bit.ly et al, called SU.PR. Om hypothesized earlier this year that services like Bit.ly could challenge Digg for social news supremacy, in part because Bit.ly tracks how many users click each particular link — allowing the company to rank (if they chose to) the most popular links in its network. SU.PR does that and more.
The key to SU.PR is that it links to the StumbleUpon network. That means that when you create a...
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