Just a note, Jeff. There are recent problems with developing and importing sites that need the Jetpack WordPress Plugin features such as the gallery, contact forms, etc., with InstantWP. This is one solution, to add the JETPACK_DEV_DEBUG definition to the wp-config.php file, and that worked for a bit, but now it isn't working again. I finally found the answer from birgire with a tiny Plugin to permit Jetpack to run locally on InstantWP, MAMP, WAMP, etc., portable versions of WordPress. Whew!

This has been a painful experience of researching and nagging to resolve this issue, and I'm so thrilled to have Jetpack finally working for myself, clients, and students using portable versions of WordPress.

Thanks!