I have had similar experiences with both poetry and fiction, though I have had more success finding good writers in the latter category. I can only speculate about the reasons why certain posts become popular. I suppose it is hard to know why a poem appeals to a person, let alone many people. Does it speak to them in some way? What if there is no clear meaning? To steal a line from the most interesting man in the world... I don't write poetry often, but when I am more satisfied with my work when I apply a few principles. For example, I like to structure it around two ideas that can contrast with and augment each other. A good example is an image overlayed with some sentiment that I can relate to that image. Follow this relationship and it may lead to some startling conclusions. The effect is more powerful than simply explaining the concept because of the power of poetry to seduce the other "senses" of our mind that want rhythm and sights and surprise. These goals provide structure for me. It is not a question of whether good poetry is made up of one kind of meter or another. It is not a matter of whether we are using allusion or alliteration or masucline versus feminine rhyms. These are tools, and the quality of a building is not measured by the tools or even the architectural features used. A terrible poem can still have perfect execution of all kinds of classical elements. It can be well constructed and empty and unaffecting. However, one can hardly make a lasting or pleasing structure without using the right tool for the job. I guess that is what it comes down to for me. I look at the core idea and ask, what tools will give the most impact to my idea? People get hung up on being judged or how subjective poetry may be. But there is no doubt that certain techniques have certain effects and that poetry is no different than anything else humans have done, in that there are always things to learn and master. Technical perfection may not be the judge of good poetry, but why wouldn't you want to learn the techniques available to bring your ideas to their maximum potential?