1 Corinthians 14

...faith, hope and love; the greatest of these is love...Let love be your highest goal!... But one who prophesies strengthens others, encourages them, and comforts them...But everything that is done must strengthen all of you.

Love and prophesy, all done in an orderly way and must have the effect of mutual empowering and heartening.  

From in the church, I can say I understand this; but if I were looking in the church and without background from the church...this would be a bit freaky to me.  I follow the love...all you need is love...well, not quite; but the greatest of faith, hope and love, the things which shall last forever, is love.  Love covers a multitude of sins, love bears all, love...good.  

So prophesy...that means...from the New Testament Greek Lexicon...

to utter forth, declare, a thing which can only be known by divine revelation

to break forth under sudden impulse in lofty discourse or praise of the divine counsels

1. under like prompting, to teach, refute, reprove, admonish, comfort others 
2. speak forth by divine inspirations, to predict 

Love and to declare a thing...maybe a point of understanding or comfort, a correction or an admonition which has been divinely revealed (something you couldn't know on your own but has divine origins)...with the goal of encouraging, establishing and fortifying the faith-family.  Not to tear anyone down, in the name of love.  Not to embarrass nor castigate a soul because someone else received an "inspired word".  

This doesn't mean I can't joke or relate a story; but in terms of the speaking from under a God-prompting...its criteria is to build up and weaken nor disarm.
 
The measure is does it prosper, invigorate or improve others?  How does my love, my speaking or both promote a holy growth in the group?  Check the motive and see who is being made strong or uplifted by my actions.  If they don't pass the strengthen and love protocols, maybe they should be neglected.