We all know headlines and taglines are key to keeping the reader on the page and convincing someone to take action. I recently read a piece on how throwing in a rhyme can actually increase credibility.
Memorability and Impact
The first is obvious. The reader is more likely to remember and can have more of an impact at first glance. It makes it easier for the reader to process information, which is important. Here are 4 examples:
Don’t get mad get _____
The quicker picker upper
How about:
My life my card
Safe happens
While the first 2 slogans are a little outdated they are still more memorable, GLAD and BOUNTY. The bottom 2 are American Express and Volvo.
More Accurate
The next reason is that rhyming can appear to make the statement more accurate. Having a statement, slogan, or headline sound a little more accurate can be the difference between a sale and a lost customer. For example, which sounds more believable:
Caution and measure will bring you treasure
or
Caution and measure will bring you riches …
How about the famous quote for you OJ fans:
“If the glove don’t fit, you must acquit”
I wonder why he didn’t just say
“If the glove don’t fit, you must let him go free”,
it was clear he made that rhyme for a reason … interesting to say the least 
Hey. Welcome back. I was wondering why you hadn’t posted for such a long time.
Thanks for the insight. Rhyming in headlines does catch your attention. It’s a difference between attracting your reader attention to read your article and hopefully make a sale than losing the reader.