Command Line!
awk '/in_reply_to_screen_name/ { print $3 }' tweets.json | sed 's/[","]//g' | sort | uniq -c | sort | grep -v BryantD | tail -20 56 graphxgrrl 57 patrickoduffy 58 jessnevins 59 othergretchen 60 GlobeChadFinn 61 ryantomorrow 65 smakofsky 66 seclectech 69 multiplexer 73 gentlyepigrams 75 rmd1023 76 mgrasso 79 JimHenleyMusic 79 Wolf_six 89 carlrigney 102 _r_o_n_e_ 107 rone_____1 129 emilytheslayer 306 rdonoghue 341 ce_murphy