I is just my habit of creating some noise in any data collection effort. Based on the fact that pg is apparently digging through the results and trying to profile certain user behaviors it is somewhat proving the point. You never know who is going to fiddle with the data so you better noise it up.
Yes, uhmm, no (I actually answered truthfully". "Because I can" seems to be pretty deeply ingrained in the hacker ethos of "analyzing, understanding, controlling" systems. Technically I'm the reason for my old schools digital policy. I couldn't find the student drives on the school computers, I looked for network drives, and somehow the teacher/admin drives showed up. I did report that in truely whitehat fashion, but if someone asked me why i was snooping around there, I could have given them the long answer "I was looking around here, and curious to see whether this and that worked", or just "Because I could". So "I was curious whether I could muddy up the data of the poll, and whether there'd be consequences or not" becomes "I broke things because I could"
I might have been wrong, but I interpreted "I is just my habit of creating some noise in any data collection effort" not as "I was curious what happens if I'll try to mess up with the poll" but more like "I don't like when people gather and analyze data, so I'll screw this up for Greater Good".
Again, it could be the motivation you put forth to, but in favor of the defendant if the evidence is inconclusive. What really bugs me is that on a site that is not entirely void of coders (There might be some around. Mayyybeee...), we use a honor based polling tool that doesn't allow for the creator to set a max number of votes per person. Now I know that creating a new poll takes time, but surely not much more than setting all the +80s font to extra large and all the <10s font to comic sans.