Not everyone has a twitter account, and even then there are a lot of people at i55 you probably haven't followed. So, I whipped up a list of Twitter accounts belonging to people at i55.
#i55TF2 search results: https://twitter.com/search?q=%23i55tf2&src=typd
https://twitter.com/GrantVincent27
https://twitter.com/froyotech
https://twitter.com/4g_ash
https://twitter.com/4Gclockwork
https://twitter.com/duwatna
https://twitter.com/blazetf2
https://twitter.com/raanndo
https://twitter.com/TheFragileTF2
https://twitter.com/shruggerung
https://twitter.com/Ma3la_
https://twitter.com/alfatf2
https://twitter.com/WARHURYEAH
https://twitter.com/apylyshyn
https://twitter.com/DavidTheWin
https://twitter.com/ThatGuyTagg
https://twitter.com/teamfortresstv
https://twitter.com/anthmizz
https://twitter.com/MFSTATE
https://twitter.com/AironT
https://twitter.com/uberchain
https://twitter.com/SideshowGaming
https://twitter.com/Suyo_
There's no way I've gotten all of them (especially EU gamers), so post more below!
People at i55: be sure to use #i55TF2