In relative order of meeting and/or encountering them. There are definitely some missing but I'm bad with usernames. PM me if you've met me at a BrickFair or something but aren't on this list.
1989: ActionMasterBumblebee 1995: Cronua 2002: Antonapoulos 2006: Bionicle Rex, Kopaka's Ice Engineering, Kaiapu, Spoony Bard, Black Six, InnerRayg, ChocolateFrogs 2008: Swiftone, LehvakLah, Makaru, Deevee, Magpi, Kohaku, Roa McToa, speaknspell, Nikira, Twingding, krazyrapdude 2009: Janus, Friar Tuck, Senjo, Hahli Husky, Emzee, Alsru: Toa of Honor, Spink, Disky 2010: Nukaya, ToMDracone, Arpy, Sisen, xccj, Nuju Metru, Primus, Vezok's Friend, Lloyd: White Wolf, Stubbed Toa, Waffles, dablackcat 2011: Brave Dragon, Brickeens, Toa Lhikan Hordika, and many more at BrickFair '11 who I do not remember! 2012: Tufi Piyufi, Takuma Nuva, Avohkah Tamer, and many more at BrickFair '12 who I do not remember! 2013: !!JOHN CENA!!, Ryuujin, Der Xaeger, probably more at BrickFair '13 that I don't remember 2014: Weasley Time Prison