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Declan McCullagh reporting in CNET: "Twitter last year began to abbreviate all hyperlinks using its t.co domain name — which had the side effect of introducing a central point of failure where none existed before. That failure happened last night [Sunday Oct 7] around 11:30 p.m. PT when t.co went offline, meaning millions of Twitter users received 'non-existent domain' errors when trying to follow links."

Related topics: DNS, Domain Names