One who updates one's status on Facebook, Twitter, or another social site, when in the midst of an extreme mood shift. (Most items posted in this way will be deleted a few minutes later, when the original poster is calm again)
Dave: Did you read Jill's status update? She sounds upset.

Joe: Nah, she's just having another mood swing. She's such a roller-poster.
by Rapunzel_Dambreaker March 31, 2011
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a poster that can post around the clock at multiple online forums.

a power poster usually is getting paid by the forum owners or they just simply love to post.

some "successful" power posters became professional posters.
I can make 30 posts at 10 different forum while watching Shaq missing three consecutive free throws, I am a power poster.
by picoman April 1, 2009
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A person who frequently visits local or college newspaper websites in order to post inflammatory comments. Commonly associated with political or opinion pieces and aged adults who post on college newspaper websites. A troll.
Don't pay attention to "Registered Independent". She's just a crazy serial poster who is trying to spew her political views to any student who'll listen.
by MikeDavid April 13, 2010
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When someone posts a comment on someone else's Facebook page then deletes it after thinking better of the post, or thinking that they look like an idiot or a ritard.
"Dude, that guy is such an Indian Poster he said he wanted to bang his own Grandma on my Facebook last night when I said I wish my grandma would die already. He deleted it this morning when he woke up and saw that his mom had seen it"
by HCKZ April 25, 2010
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when you post a word on UD, but then change your mind and would like to remove it
After I submitted one or two words, I suffered from poster's remorse- now I'd like to remove them and I don't know how
by Meadow Soprano November 9, 2005
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The serial poster is someone on facebook that joins groups to post excessively ( at least a dozen posts back to back ) to drown out any other posts from other group members for maximum attention yet never comments on anyone else's posts & never clicks the "like" button the person is only there for the high they get from others liking what they posted & ignoring all other group members.
"Mr. Smith" always posts twenty or more posts back to back but never clicks "like" or gives comments nor compliments about anyone else's music posts. He is a serial poster & is only seeking attention.
by Mark2020 March 1, 2016
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Usually used (by males) as a slang term to let one know that you're planning on masturbating. This comes from the knowledge that semen is of a sticky, glue-like consitancy, and would be perfect for, well; hanging posters.
Sal: "Hey, Jerry, you wanna hang out? Maybe get some lunch?"
Jerry: "Sure, but I just got a look down your mom's blouse and I really feel like hanging posters. I'll call you when I'm finished".
Sal: "Yeah, I know the feeling. I think I'll go hang some posters as well".
by Babies August 19, 2006
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