Changes to Soil pH. If vinegar concentrates are added to the soil instead of being sprayed onto plant foliage, they kill weeds by lowering the soil pH to a level that cannot sustain the plants. Depending on the soil type and the weather, this acidifying effect can take from a few months to a year.
Engagement rate is the percentage of people who saw a post that liked, shared, clicked or commented on it. To see the engagement rate for your posts: 1  At the top of your Page, click Insights. 2  Click Posts. 3  Scroll down to All Posts Published.
The memo included cost-per-follower (CPF) rates for Promoted Accounts and cost-per-engagement (CPE) for Promoted Tweets. The CPF runs between $2.50 and $4, while the listed CPE rates come in from $0.75 to $2.50. For CPE, engagement refers to clicks, favorites, retweets and @Replies..