Written about in blog, I'm acknowledged as foreign friend (5)
I believe the answer is:
amigo
'foreign friend' is the definition.
(I've seen this before)
'written about in blog i'm acknowledged' is the wordplay.
'written about' shows that the letters should be reversed in order.
'in' indicates the answer is hidden within the clue.
'ogima' can be found hidden inside 'blog im acknowledged'.
'ogima' back-to-front is 'AMIGO'.
'as' is the link.
(Other definitions for amigo that I've seen before include "friend from Barcelona" , "China (in Spain's view)" , "Friend in Spanish-speaking areas" , "Pal from Madrid?" , "friend in Uruguay" .)