Poetess Laureate
Actually, that's a good point to bump this back up with.
Does every poem have something in it to redeem it? Or are there some that there honestly just isn't anything 'nice' to say about? If there are, what makes a poem that 'helpless' vs. something that just needs a lot of work?
No.
Not every poem has something in it to redeem it.
For example, some poetry is just prose with line breaks: it has no imagery whatsoever, the meaning is simplistic and overdone, and there are spelling/grammatical errors everywhere.
I will say this, however: EVERY poem has the potential to be a better poem. I don't think poems necessarily deserve to be scrapped; that's up to the writer. However, there are poems that need COMPLETE rennovations. With the poem that's really prose, the poet may want to keep the general concept, but rewrite all the lines so that they contain imagery, proper grammar, and worthwhile perspectives.
In my opinion, no critic should be forced to find something nice to say about a poem when there isn't anything there.
So, what do you do when you face a helpless poem? Tell the poet EXACTLY where they went wrong. This may take a lot more time than just the blanket "You suck and there's nothing good about this poem" statement that I see many times in these situations, but at least the poet will know why critics are cringing at his or her piece. Direct these people to stickies and other helpful links (like this one) and be sure to tell them to keep writing, since they must keep writing in order to improve. Tell them that everyone has to start somewhere; just don't tell them things that aren't true in order to spare their feelings.