Intense_Interest
First Post
Craft (poetry) could, arguably, be used. Not cross class at all. And whether or not it's a worthwhile purpose is going to depend a lot more on the individual campaign. I could imagine a campaign in which craft (poetry) might be used more than ride, handle animal, climb, or jump.
There's nothing in the mechanics that discourages spending points on being a good poet. It's all a question of the campaign in which the character will be playing.
How about if a DM said that you had to either use a Knowledge (Literature) or Craft (Poetry) skill to find or make a poem, respectively, but a Perform (Poetry) to actually say it aloud? Again, we're drifting far down the "Roleplaying isn't a Game system decision" stream.