I think they expire. I think they only keep them posted for x amount of time and then they are deleted. My local Nest board only has 10 or so posts, because no one posts there anymore.
The bump default is to only to show posts newer than 2 months, but you can change that so you can see all the posts for the past year.
Ditto this. At the bottom of the list of posts, you can change the defaults (including the 2 month). Can't believe we've only had two pages of posts in the last 2 months....
Re: What happened?
my read shelf:
BFP #2 03/08/11 EDD 11/16/11 DD Born on 11/04/11
BFP #3 08/29/12 EDD 05/06/13 M/C on 08/30/12
BFP #4 11/01/12 EDD 07/09/2013 M/C on 12/28/12
BFP #5 04/30/13 EDD 01/03/14 DS Born on 01/02/14
BFP #6 01/11/15 EDD 09/22/15 M/C 03/09/15
Ditto this. At the bottom of the list of posts, you can change the defaults (including the 2 month). Can't believe we've only had two pages of posts in the last 2 months....