A couple of days ago I assembled a list of 50+ directories and services to post a product in order to get early adopters, feedback and press coverage.
(Of course, Product Hunt is in it!)
There are new services almost everyday, but most of them are quickly abandoned. The links in my list are all active ones (checked one by one).
It can be a nice integration to the services listed here. I hope it can be useful if someone is launching a new product!
If I missed something interesting, please let me know… any feedback is really appreciated ;)