How would you feel if you posted somewhere and all the other post around you are being replied to since they were only SPN and no touches yours.</i>
I'm one of like, three (that I've seen) Heroes players I've seen on the various panfandom comms I've checked out. Often my posts get ignored, and when it happens I just wait a while and make another post. I'm also not afraid to leave a comment in a post from a character of another fandom. If they don't respond, they don't respond.
For the record, I've had good experiences with crossover, between responses to my posts and when I reply to others. Even if the threads fizzle out, there's still an effort.