This is my take on commenting on boardmarks:
One post that says "Hey, we're up to 236 boardmarks!" is, imo, occasionally fine. However, almost inevitably, this begins an avalanche of similar posts.
"Oh, I forgot to mark it, now we're at 237"
"Woohoo"
"I bet we can have 10 more before the night is over"
"Yeah, get the word out people - we need 247 in 4 hours"
"238!!!!!!!!!!!"
"Make that 239"
"Chugga, chugga - 240"
"Wow, that was quick in an hour we're already at 244"
"Get those boooooooooooardmaaaaaaaaaaaarkkkkkkkkssssssss"
"I was on a board once that got 20 more boardmarks over the weekend and we went up 20% on Monday"
"Was that XXXX?"
"No, don't think I played that one - it was ZZZZ"
"Oh yeah, I remember that one - didn't play it"
"It was beautiful, 10 bagger in a week"
"Niiiice"
"245!"
"I'm heeeeeeerrrrreeee - 246!!!!!!!!!!"
"C'mon, guys, one more - we can do it!"
"There it is - we did it - 247"
"Yeah, now we just have to get moving on the hot lists"...
So, someone coming to read the board and see what's going on with the company i.e. why there are so many new posts, spends quite a bit of time wading through one liner posts that are about things other than the company. People get annoyed at the waste of their time.