Does Henry call for topic on Bluesky? (7)
I believe the answer is:
hashtag
'topic on bluesky?' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'does henry call' is the wordplay.
'does henry' becomes 'hash' (I can't justify this - if you can you should give a lot more credence to this answer).
'call' becomes 'tag' (tagging is a kind of calling).
'hash'+'tag'='HASHTAG'
'for' is the link.
Can you help me to learn more?
(Other definitions for hashtag that I've seen before include "Label on a tweet" , "Social media identifier" , "component of tweet" , "Word or phrase to aid online searches - hag's hat (anag)" , "Number symbol" .)