Hi Marcelo,
Many FLOSS mailing lists are also "newsgroups on gmane" -- so
Marcelo de Moraes Serpa <celoserpa@gmail.com> writes:
> I still didn't find a good way to manage my mailing lists,
> I'm definitely not satisfied with my current setup.
you can simply launch your favorite nntp reader and read/post.
I use Gnus for nntp, I cannot to Gmane et voilą!
> How do you manage your mailing list/newsgroups: what tool(s) do you
> use and what's your workflow? It'd be nice if one could centralize
> reading in one place, perhaps by using emacs as a client, but without
> eating a lot of disk space.
I also use Gnus + http://gwene.org for reading RSS feeds...
which is just *great*.
HTH,
--
Bastien