Tumblr Adds Some Attribution Capabilities

When The New Yorker posted the Escher-inspired oil-spill-themed cover for its July 5 issue on its Tumblr page, it drew many links from other sites.
Alexa Cassanos, director of public relations for The New Yorker, which began using the service in late May, said the cover resonated in unlikely places, like the news aggregator Reddit.
Ms. Cassanos said Tumblr afforded The New Yorker an opportunity to showcase some material that might otherwise get lost online.
“We can highlight graphic content like photo essays or slide shows to an audience that may not read the magazine,” she said. “You just couldn’t do that, visually, on Twitter or Facebook.”
With standard RSS feeds, a client has to poll the feed at regular intervals (usually around once every 15 minutes). A PubSubHubbub enabled client, however, will receive a ping immediately after a post has been published.
