Posts prior to y2k's death (Starting on page 7):

"I'm keeping my vote on ghug now but I'm definitely in favor of lynching the player that lurks the most." (pg 7)

"i have no argument against ghug. i have no argument against anyone. i don't understand any of the arguments people are making that show someone is cult/town or what not." (pg 8)

"i guess my biggest red flag on ghug is calling balki "uclabbian" as if that's a point against him" (pg 8)

"is there a reason people feel like they need to join a wagon right now? I'm suspicious of wagon voters." (pg 8)

"someone help me and highlight the townslip? copy it or point me to a page?" (pg 8)

"i found it, page 3. [][]VOTE bo_sox" (pg 8)

"i reiterate again how no one should be claiming traitor" (pg 9)

"jamiet, why is guak better than bo_sox?" (pg 10)

"masons are the closest thing to actual scum. the other minority power roles are more like third-party now than in the minority "scum" team." (pg 10)

"why is anyone against lynching bo_sox? I would only consider lynching the lurkiest player over bo_sox, save for another egregious slip." (pg 10)

"balki, what the hell is 'suspicious behavior' to you right now?" (pg 10)

"suspicious behavior to me has always been sensing an ulterior motive to "finding scum", but given the complicated setup, it's hard to interpret true scum-hunting from anyone, so the only suspicious behavior to me are blatant slips now. once we have some flips, rereading D1 will be a lot more useful." (pg 10)

After this y2k was killed.

So he seems to have been doing the following:
-focusing on lynching bo
- a minor focus on lurkers
-wanting the masons dead

My guess is the first and third are why he was killed.

The people who posted within 2 pages of his death (which may have a slightly higher chance of containing the vig) in no particular order are:
Balki
captainmeme
Jamiet
OB
brainbomb
Claesar
guak
delarosa
HR (abotu 40 min after the shot)