The most common and most likely answer to this crossword clue is the 8 letter word TRENDING
I've seen this crossword clue in The Times
T
R
E
N
D
I
N
G
More clues leading to the result TRENDING
- Much-followed wind-up by extremists on Twitter
- Right back about to stop generating discussion
- Stop following transactions popular on social media
- Telegraph leader’s cutting becoming very popular
- Extremists in Twitter dying to be this?
- Moving with aim to settle in Herts town
- Splitting after Time's heading
Buddy explains!

The straight part
We know that "generating discussion" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case generating discussion = trending.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TRENDING mean?
TRENDING verb- To have a particular direction; to run; to stretch; to tend.
- To cause to turn; to bend.
- To be the subject of a trend; to be currently popular, relevant or interesting.
- To cleanse or clean (something, usually wool).
- A trend, or inclination in a particular direction.