ɐkˈoːɹdɪŋ tə smˈɑːɹt mˈʌni, baɪ ˈɔːɡəst tˈuː θˈaʊzənd tˈɛn, ðɛɹwˌɜː mˈoːɹ ðɐn fˈaɪvhˈʌndɹɪd ɡɹˈuːpbˈaɪɪŋ sˈaɪts wˈɜːldwaɪd, ɪŋklˈuːdɪŋ lˈoʊkəl sˈaɪts ðæt kˈeɪɾɚɹ ˈoʊnli tʊ ɐ sˈɪŋɡəl sˈɪɾi ɪn sˌʌm ˈɪnstənsᵻz.
According to SmartMoney, by August 2010, there were more than 500 group-buying sites worldwide, including local sites that cater only to a single city in some instances.