Turning out to be the online type (8)
I believe the answer is:
eversion
'turning out' is the definition.
(I've seen this before)
'the online type' is the wordplay.
'the online' becomes 'e' (as in e-mail or e-commerce).
'type' becomes 'version' (version is a kind of type).
'e'+'version'='EVERSION'
'to be' is the link.
(Other definitions for eversion that I've seen before include "Out-going turn" , "Turning out" .)