I've always been annoyed by speech fads "Radical!" "go for it" "let's DO this", etc. But the new fad of starting every other sentence with "So" drives me NUTS! Especially annoying on NEWS shows like Fox Business channel where the people are SUPPOSED to be intelligent.
Sad how a word or phrase catches on so quickly.
Why do people feel such a need to copy how others talk?
Another one, almost as bad "I could care less".
The phrase should be "I could NOT care less".

Many people's speech is messed up with garbage phrases and words as well as misuses such as "I could care less." Toastmasters International has simple ways of curing people of such bad habits. However, most people continue to speak in a slovenly manner because they don't care, are unaware, or no one in authority cares to make them speak correctly.

The Toastmasters method is to station a member at the back of the room with a cowbell. When the speaker uses garbage words or phrases such as "you know," or "ugh," the member rings the cowbell. The speaker, previously unaware of how he is larding his speech with garbage, rapidly becomes aware.

In other contexts such as aviation communication, slovenly speech not only wastes time but can lead to tragedy. The worst plane-to-plane disaster in aviation history stemmed partly from poor comms. In personal experience I am sometimes privileged to be taken for small airplane rides by a pilot friend. His comms are awful beyond words. Whenever he flies he confuses and/or irritates controllers. Sometimes every controller he speaks with! My friend is clueless about his incompetence and blames the issues on the controllers being cranky. I have seen competent instructors try to give him tips, but no dice: he thinks he knows everything.