-spotting       
suffix uk/ -spɒt.ɪŋ/ us/ -spɑː.t̬ɪŋ/
 观看…的爱好;对…的探寻
used to refer to the activity or job of noticing people or things of the type mentioned
  There might be an opportunity for some celebrity spotting. 可能有机会看到名人。 
 talent-spotting 做星探 
 See: -spotter
 - More examples
 - We used to go geek-spotting at the local cinema.
 - Traditionally, millionaire-spotting was left to tabloid newspapers.
 - There were about two dozen British police advising the Portuguese and "hooligan-spotting".