Evil Editor has been most pleased with the New Beginnings. The continuations have been brilliant in that they maintain the original author's tone while taking the story in an unexpected direction (in some cases, a direction I wish the actual story took). Of course choosing one instead of five makes it easier to maintain the quality, though it means some good continuations miss the cut.
If you submit your first 150 words to Evil Editor, your input will come from commenters. EE occasionally prevents a comment from getting through, if it seems mean-spirited, but not if he disagrees with the comment. You can't be sure whether a particular comment is coming from a third-grader or an editor, so individual comments should not bother you. But when many commenters have the same reaction, a red flag should go up. Will an editor or agent have the same reaction?
Besides quantity of comments, consider quality. It's hard to do so with comments about your own work, but read the other New Beginnings. Which commenters seem to know what they're talking about? Which make valid points and which don't? Which do you agree with? Eventually you may come to trust certain minions as much as you would Evil Editor.
People are reading your beginning and reacting to it. Use what's helpful, ignore the rest. And don't take anything here too seriously.
If you've supplied a continuation that was used, and would like to be credited, email me.
Thanks to all who've provided Guess the Plot summaries for earlier queries. Most of the first 20 now have them, and while they aren't necessarily challenging (especially if you've already read the piece), many of them are amusing.