Member Rara Avis
Probably not, Kacy.
If a poet is alive or only recently deceased (say, in the last 100 years), their words still belong to them. You can treasure them, but you can't use them without the poet's (or the estate's) express permission. To do so would certainly be copyright infringement and, in my opinion, disrespectful. I, for one, would like to decide where my words are posted because, due credit or not, there are many places on the Internet I would feel were a poor venue. If I want that right for myself, I have to be willing to give it to ALL writers.
The only way we could do what you suggest would be to stick exclusively to poetry that has passed into the public domain. Unfortunately, following that isn't always easy and would make any forum geared towards public domain poetry an administrative nightmare. A year or so ago, I removed several wonderful poems by John Donne from the Classical Poetry section of the main site because one of his descendents still owns the rights to them. The kicker is that Donne died in 1631.
Determining what is and isn't in the public domain could easily be a full-time job for someone. But, uh, it won't be me.