Many popular blog services offer "bookmarklets" — software tools, installed in browsers, which allow users to quickly post an article they're reading online. The "Share OnSugar" bookmarklet's source code appears identical to the code Tumblr founder David Karp and engineer Marco Arment wrote for the "Share on Tumblr" bookmarklet. Compare the two, above: Sugar hasn't bothered to do much more to the user interface besided adding tags and categories, which are hidden "advanced options" in Tumblr's bookmarklet. The code is an even closer copy.

Here's the problem for Karp: Though popular with a certain crowd, Tumblr is far from mainstream. So users who fall in love with OnSugar blogs may never learn about the original.

We'd point out that Tumblr itself is just a happily dumbed-down ripoff of LiveJournal, which predates it by nearly a decade and offers all the privacy features Tumblr users have been begging Karp for, but after OnSugar's more blatant blow, that seems cruel.

Scott, Scott, Scott: Negroponte has never been in the business of doing anything. His core competency is talking. The sooner you learn this, the happier you'll be at One Laptop Per Child. Negroponte's goals with One Laptop Per Child are admirable and visionary. As with many visionaries, his contact with reality is infrequent and tenuous. The best way to get OLPC's hardware and software built: Send Negroponte on another worldwide goodwill tour, keeping him as far from the labs as possible.