Are most message boards dofollow or nofollow?

Are most message boards dofollow or nofollow?
also, is there a quick way to tell if one is or not?

for example, is this message board nofollow or dofolow.

 

each forum has it own rules...... just do page->view source

then seach for the words no follow.

 

thank you for good question.
i have a 12-year-old site agents-tech.com
through dofollow, i receive 3000 backlinks.
and earn extra 500$/day from adsense.
my site key words are very expensive: 20$ ppc

 

thanks for the answer..