The difference can be so incredibly slight, it's just a matter of style most of the time, imho. Here's a case in point:

Shakira Changed Name And Wore Disguise For UCLA Class


Posted Mon Oct 19, 2009 5:27pm PDT by Billy Johnson, Jr. in Stop The Presses!
How did Shakira manage to take a summer history class at UCLA in 2007 and not make headlines until after the course was over?
The Colombian-bred international pop star revealed her successful game plan in a recent interview with the UK's The Guardian.
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I'm going to take the 8 posters who get the most votes for "worst poster of the year" and the 16 posters who get the most votes for "poster of the year" and we'll do an elite 8 and a sweet 16 contest (they will have the same format as the 128 man contest except the number of votes you get in the nomination thread will determine your ranking).

Please tell me how you think the polls for these contests should be graded:

Option 1: Simple majority (minimum 500 posts to vote)

This is what we did last year. The minimum of 500... More...

Let's discuss the rules for voting so the process can be as accurate as possible. SBR John is talking about huge prizes so I think everyone should be interested:

[quote=SBR_John;2395000]We should do that... How do you get all those rankings is beyond me. Should have some prizes like;
1st 10,000 points
2nd 6500 points
3rd 3000
4th 2000
5th 1000
6th 500[/quote]

http://forum.sbrforum.com/players-talk/248069-2008-poster-year-voting-look-back.html

Here's how it was done last year:

It started with a thread where people nominate the posters of the year (these are the manual votes):

http://forum.sbrforum.com/players-talk/130974-vote-posters-year.html

Then the nominees for poster of the year are split into groups of 21 (the max amount allowed for a poll) everybody votes... More...

Everybody might enjoy this:

http://forum.sbrforum.com/players-talk/133084-congratulations-jjgold.html

Top 84 using a weighted average total of manual votes and automated votes (due to cheating):

Poster, manual votes, automated votes, weighted average total

1 jjgold 9 45 104
2 tsoprano 6 55 94.33333
3 Nicky Santoro 9 33 92
4 ... More...