pro·zuck·tive
/prəˈzʌktɪv/
–adjective
1.
the spending of excessive time on facebook, making 'witty' comments on recently uploaded photos; generative; creative of useless outcomes: a prozucktive effort.
...2.
producing readily or abundantly; fertile: a prozucktive facebooker.
3.
causing; bringing about (usually followed by of ): conditions prozucktive of time wastage and procrastination.

Origin:
2011; < Modern English; derived from the fusion of facebook founder Mark Zuckerberg's surname and the preexisting adjective 'productive'>