Answer:

thread

Answer	Crossword Clue
THREAD	Series of tweets
THREAD	Series of online comments
THREAD	Item used by 13-Across to navigate the 22-Across

THREAD	It may get stuck in an eye
THREAD	Bookbinder's material
THREAD	Series of online posts
THREAD	Filament
THREAD	Spiraling part
THREAD	Sewer line?
THREAD	Screw feature