Animating your text gives you more control over your audience's attention. You can easily move around graphics, but if the moving object is text you want your audience to read, they will follow along to gather the information within the text. It is important not too move your text around too much as this can also be a double edged sword.

Audio(music and sounds) within a video presentation is a tool that can help you engage more with your audience, unfortunately it is a double edged sword. There are times when the audio can fail or be delayed, which can throw off the rhythm of your presentation as well as your confidence. Using audio for edited videos gives the user more control as they can edit the audio to their liking.

This one's a double edged sword. You may think it's a no brainer to achieve a bit of smear, but by including it, you reveal that you're not aware of the shambolic inquiry it was attached to or the matters of public importance the SMH had failed to report when it all took place.