I would think that the counterpoint would be: if it's made public, will there be posts with comments like "Who the heck is rje58? and who are the other dozens of votes from BF members I'm not familiar with?" This doesn't seem like a friendly way to attract more interest to traditional knives.
The other issue might be: would any of the "regulars" use the public aspect of the poll to pressure or influence other "regulars".
"Eh, John, I see you voted for the freakin' spear point! I guess you're gonna vote against <the next poll feature I want>, too, huh, buddy?" < sent via email or PM >
FYI, I may not be a "regular" in the "Traditional Folders and Fixed Blades" subforum, but I've made more than a couple of purchases in the "The Knife Exchange: For Sale by Individuals: Traditionals, Slip Joints, Old Timey Style Knives" subforum.
I'm not saying that would happen, I'm just playing devil's advocate and presenting the other side of the coin.