There is no one definitive answer to this question. Some people might say that there is not a poetry blog, while others might say that there are a multitude of blogs that focus exclusively on poetry.
Ultimately, it is up to the individual to decide whether or not they believe there is a poetry blog out there.
One thing that is clear, however, is that poetry blogs have become increasingly popular in recent years. This popularity can be attributed, in part, to the fact that poetry has always been a widely-read and appreciated form of writing.
Furthermore, online poetry blogs offer an accessible way for poets to share their work with a wider audience.
Overall, then, it seems safe to conclude that there is a poetry blog out there for anyone interested in reading and writing about poetry.