Hmm...I would LOVE it if there was one way to 'get listed as a
writer's resource', but sadly, like everything else in life, you have to
work at it.
You can start by getting involved in online communities, newsgroups
etc., and including a subtle link in your signature file. This
establishes you as someone with worthwhile contributions, someone
trustworthy -- assuming you are ;)
You can also offer free advice, articles, offers, to the editors of
newsletters that writers read (like writersweekly.com and writing-world.com).
They will reprint your information along with your bio. If your site is
good enough, these people may add you to their lists of resources. Try
contacting the editors of the sites on my
resources page if you think your site would interest them. If you
can't get free publicity in these newsletters, you can usually pay a
little to advertise.
There are also the standard search engines, each of which has
information about how to register your site with them. Then there are
specialist lists that you can find and apply to.
Everyone who likes your site may tell another couple of people, and
that's how word of mouth support happens. There is also a list called
WriterZines at Yahoo Groups, in which writers of newsletters can post
details of their newsletters, in the hope that people will subscribe.
It's free and I usually pick up a couple of subscribers every time I
post.
Basically, you have to pound the virtual pavement, and try to get
listed at every writer's resource site you come across.
Oh yes, and use a signature file that tells people about your
site/product, on every email you send.
Good luck!
Julie