I rewrote the ELPA web page the other day. Now it should be clearer about how to get your Emacs Lisp packages into the archive. I’ve also added a news section and uploaded a few more useful major modes.
Emacs Lisp package authors, please send me your code. I will upload it right away (I have an Emacs macro to upload a single
.el file to ELPA directly from Gnus :-).