He had so obviously divined her interestingness; he so obviously wanted to enjoy it.

Every place I get anything near that, the interestingness and quality goes through the roof.

Syncing itself has been tweaked slightly as well using what Mozilla calls an "interestingness" algorithm.

We show off by noting the interestingness of our companions, the solidity of our relationships, the fabulousness of our meals.

And, finally, as a key to interest, a teacher needs to know what the "factors of interestingness" are.