First to review online follower's business (8)
I believe the answer is:
retailer
'business' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'first to review online follower's' is the wordplay.
'first to' suggests taking the first letters.
'online' becomes 'e' (as in e-mail or e-commerce).
'follower' becomes 'tailer'.
The first letter of 'review' is 'r'.
'r'+'e'+'tailer'='RETAILER'
Can you help me to learn more?
(Other definitions for retailer that I've seen before include "One selling to consumers" , "Store-keeper" , "story-teller" , "Seller (of goods)" , "One selling to public" .)