Location of websites grasped by visionary poet (9)
I believe the answer is:
sonneteer
'poet' is the definition.
(I know that sonneteer is a type of poet)
'location of websites grasped by visionary' is the wordplay.
I cannot really see how this works, but
'location' could be 'tee' (tee is a kind of location) and 'tee' is located in the answer.
'of' could be 'o' and 'o' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for sonneteer that I've seen is " Poet".)