Primary data source: public feed (data from 29 June 2009 onward)
Alternative feed view: TwapperKeeper tweet archive (data from 7 July 2009 onward)
154 eyb
106 xolotl
73 georgekroner
70 snaggle
61 mathplourde
50 botimer
49 lancespeelmon
49 darlingbec
41 iandolphin24
39 jennamcjenna
39 winkler4
37 khomotso
37 steveswinsburg
34 smkeesle
31 stephenmarquard
31 bmorisette
31 zennifer01
27 marianne99
27 relong
27 natefinley
26 robcoyle
26 mfeldstein67
25 rsherratt
24 trillich
22 frankbenneker
22 ralee77
21 MrsB_atHCC
20 johnalewis
19 mnotess
19 rogerjhenry
19 nicolamj
18 mkorcuska
18 magnust
18 christianaziz
17 david_horwitz
16 maximka
16 serensoft
15 cdcoppola
15 jolietingen
14 thecarlhall
14 gedoyle
12 mollywoggly
12 rossmackenzie
12 kdellis
12 jensader
12 debot
12 JoshBaron
12 drchuck
12 ZAThomas
11 vcrkid
11 jessicao
10 knoop
10 AmsDiane4Tech
10 wytze
9 iangoh99
9 TL_Interactive
8 mmortonallen
8 hartsook
8 shojikajita
7 Intellagirl
7 pdxOH
7 holdorph
7 buckett
7 adlaird
6 dogle
6 mkolb
6 jmarca
6 mara_hancock
6 hokies9402
5 raraweez
5 jeffswain
5 meganmmay
5 singerkd
5 studioego
4 jpostonday
4 ThisIsBrian527
4 takethecann0lis
4 SoftChalk
3 goodrum
3 tolliug
3 ambernichole
3 grinnpidgeon
3 rjgbrown
3 jaeques
3 rsmart
3 jbuckner
3 Czernie
3 rcoylehopkins
2 elicochran
2 john_little
2 jlongland
2 lgekeler
2 kthompso
2 DrWilliamsIsIn
2 alanakumbier
2 AmyNeymeyr
2 atajev
2 aneesha
2 carlbarrow
2 kthanos
2 jmingsun
1 p1brunne
1 hyattcareers
1 nolaug
1 _ieb_
1 cohortanalysis
1 LT_UMD
1 PublishingSpy
1 wfvanvalkenburg
1 jsnider
1 ezrasf
1 memorr02
1 twapperkeeperRT
1 lynnward40
1 lindafeng
1 betseymerkel
1 abureuben
1 wootboot
1 MariaK
1 jesshmitchell
1 cojacked
1 scipioafricanus
1 Abigrey
1 jmholtzman
1 lukewbt
1 cupoflizard
1 kiyanwang
1 CosmoCat
1 duhrer
1 ideahive
1 lovecasun
1 nerdmeyr
1 bryanstearns
1 ikarzali
1 gocoach
1 cdfalcao
1 evolvelearning
1 bcorrigan
1 nfgrilo
1 seththeriault
1 cyprien
1 NancyProctor
1 innovative_tech
1 sshannon1846
1 mchris4duke
1 mikezack
1 PaulHollins
1 jodiarlyn
1 kerryjor
1 pegasus73
1 Alexandermay
548 TweetDeck
418 web
116 TwitterFox
106 Tweetie
88 Seesmic Desktop
75 mobile web
71 twhirl
65 Nambu
62 TwitterFon
46 txt
40 API
22 Twitterrific
21 Ustream
18 Twidget
18 TwitterGadget
13 twidroid
9 TwitterBerry
7 Netvibes
7 twitterfeed
7 Adium
6 Ping.fm
6 Gwibber
6 twit.el
6 UberTwitter
5 Profile2
4 Hahlo
4 Power Twitter
4 LaTwit
4 TwitBin
4 EventBox
2 Seesmic
2 BeTwittered
1 XMPP Gateway
1 bit.ly
1 foursquare
1 TwitPic
1 Yfrog
1 vlingo
1 NatsuLiphone
1 HootSuite
1 diigo