What does the Warpcast team consider spam? What are examples of spammy behavior? How do you know if you are marked as spam? 

Everything that has been made public about the spam algo is in the frame below, including the tool to check if your account has been marked. I can't help you get unmarked as spam.  I created /farcasterunion to bring these issues to the forefront and give people a public place to talk about it, but all I can do is help raise awareness. If you've seen something that should be included here, please let me know. 

https://whykusk.warpcast.tools/api/frames/cold-goose-28 