Crossword Genius

Sensing a cheer erupting, they give results to surfers (6,7)

Ross

I believe the answer is:

search engines

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'they give results to surfers' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'sensing a cheer erupting' is the wordplay.
'erupting' indicates anagramming the letters.
'sensing'+'a'+'cheer'='sensingacheer'
'sensingacheer' anagrammed gives 'SEARCH ENGINES'.

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I've seen this clue in The Independent.
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