You know, I'd hate to send crit to someone who gives out a lot of reviews in the poetry section, and I'd hate to sound overly blunt. However, I just have to say that things like this don't really help an author. Even with poetry, it's really a better idea to come up with something specific to say about what's written. For example, is there a line that you thought works? One that doesn't? How do you feel about the rhyme scheme? And even then, go a step beyond "I thought the rhyme scheme is pretty good" by saying why you thought so. (As in, instead of "it's pretty good," maybe say "I thought the use of tetrameter gave the poem a calm, even tone that gave it a tranquil feel. This goes great with your message of love and peace.") Of course, you don't have to go on a scholarly level. You just have to say something specific about the poem so that the poet knows you've read it. It's more flattering that way, and it can tell them what they're doing right so they can replicate it in the future.
That and there's a rule about it.