Crossword Genius

Very extensive, nameless posts online (4)

Ross

I believe the answer is:

vlog

'posts online' is the definition.
(a vlog is a video blog)

'very extensive' is the wordplay.
'very' becomes 'v' (abbreviation).
'extensive' becomes 'log' (I can't justify this - if you can you should believe this answer much more).
'v'+'log'='VLOG'

'nameless' is the link.
I am not very happy about this link. It may be part of another bit of the clue.

I've seen this clue in The Guardian.
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