It's always worth the effort

I call this putting a treat in your copy. It's putting something in the copy that rewards the reader with more than straight information. My thought process is that, if they are rewarded with a little treat for reading, even when they aren't really interested in what you have to say they will happily stay with you for the treats.

I doesn't work in a lot of written mediums but is perfect for public notices or DM mailouts or website and google searches, Why, it even helped build a brand at Innocent