Write short

Twitter, Facebook and other social media sites encourage brief messages (sometimes called "micro-blogging").

Facebook even allows you to create ads, but these ads have a severe character limit - 25 in the heading, 135 in the body, or 160 total, which is the same as Twitter.

The advantage is that the "click-through" link doesn't count toward your character limit, and you can attach a picture. You can try Facebook ads yourself without actually committing to running (and paying for) them. As you compose the ad, a preview shows up in the window. Try creating some ads for your own interests and screen-grab the results and post them here.

Here's one of mine.

Is it easy? Hard? Why?