See interruptions on YouTube much? (5)
I believe the answer is:
loads
'youtube much?' is the definition.
I can't judge whether this defines the answer.
'see interruptions' is the wordplay.
'see' becomes 'lo' (archaic exclamation meaning 'look!').
'interruptions' becomes 'ads' (I can't justify this - if you can you should give a lot more credence to this answer).
'lo'+'ads'='LOADS'
'on' acts as a link.
Can you help me to learn more?
(Other definitions for loads that I've seen before include "bags" , "Burdens, cargoes" , "A great many" , "a lot" , "Charges; plenty" .)