Should you urge people to "Join" your service, or bark at them to "Sign up," army style? What about your tagline...how can you possibly sum up everything you have to offer in just a handful of words?

In this mobile-first world, where screen-estate is limited in the extreme, you need to make every word count. And even your smallest word choices can make a huge difference, both on the number of times people tap (hello, metrics!) and how good your app makes people feel (hi, brand perception!). At Pinterest, we brainstrain long and hard over every word we use. We also do tons of testing, and Pinner interviewing, to help us understand what works.

Come find out how to write the kind of short, sweet messages that mobile demands, hear a few of Pinterest’s wordsmithing success stories, and learn how to choose the right words for your own audience.