What am I doing wrong on craigslist?

[Crystal]

I have something I posted on craigslist and no matter what I do, what posting title I use I can not get my posting with the other posting. I posted it today, I logged back on to CL and looked at all the new posting for March 13 and mine was not there. What do I have to do to get my posting with everyones. I tried time. Yea, I know it seems so simple but no matter I do its not with the other ads and it getting pretty annoying cause its happening to all my posting. Any tips?
I have received and confirmed the Email and I have also waited several HOURS before going to search for my posting. Yes I know about 'your posting can be found here' but since this problem accord (happens several times) I go back and search like I was looking to buy something and my posting is nowhere to be seen until I type in the exact title I used in my posting or click/copy the link provided in the Email. Help!!!!