Grammar. 1  Also called objective case. (in English and some other languages) a case specialized for the use of a form as the object of a transitive verb or of a preposition, as him in The boy hit him, or me in He comes to me with his troubles. 2  a word in that case.
pinning-a mutual promise of a couple not to date anyone else; on college campuses it was once signaled by the giving of a fraternity pin. promise-a verbal commitment by one person to another agreeing to do (or not to do) something in the future.
In between pinning others' pins, you can pin about 10-20% of your own messages. (Too much more than that, and it's considered spammy.) You will want to create about 10 boards to start, on topics related to your cause. Try to make at least some of the boards entertaining and fun, to encourage people to follow.