My method for easy post with 20 pics and captions:
Before uploading (photobucket only, all those other hosts suck balls for this)
Just rename each photo numerically then a name that makes sense like 01biggirlbentover.jpg for example.
Then name the next one 02fatgirleating.jpg and so on.
Then upload the entire batch to photobucket, it goes quick if you've sized them already.
Then just drop down to the bottom of the page (the one that shows your uploads),
check select all, then generate html/img code, copy paste the img codes (they always come in 20's)
Drop into the post here and you can use the "fatgirlbentover.jpg" part in the codes to remember if you wanted to comment under that one, fast and easy.
I used to have to keep hitting preview before I started naming them to see which photo I was commenting on.
This is much faster.