ʌntˈɪl tˈuː θˈaʊzənd fˈoːɹtiːn hiː wʌz ˈɔːlsoʊ ðə meɪntˈeɪnɚɹ ʌvðə wˈɜːld spˈaɪdɚ kˈæɾɐlˌɑːɡ, ɐ wˈɛbsaɪt fˈɔːɹmɚli hˈoʊstᵻd baɪ ðɪ ˈæmn wˌɪtʃ tɹˈæks ðɪ ɚɹɐknˈɑːlədʒi lˈɪɾɚɹᵻtʃɚ, ænd ɐtˈɛmpts tə meɪntˈeɪn ɐ kˌɑːmpɹihˈɛnsɪv lˈɪst, sˈɔːɹɾᵻd tˌæksənˈɑːmɪkli, ʌv ˈɛvɹi spˈiːsiːz ʌv spˈaɪdɚ wˌɪtʃ hˈæzbiːn fˈɔːɹməli dᵻskɹˈaɪbd.
Until 2014 he was also the maintainer of the World Spider Catalog, a website formerly hosted by the AMNH which tracks the arachnology literature, and attempts to maintain a comprehensive list, sorted taxonomically, of every species of spider which has been formally described.