Hello!

This is my second day with my n800 and damn I love it!
I've been using Linux distributions for years now but this is something revolutionary...
Anyways, some things are bothering me:

1. No SIP applications?
I want to call via sip.voipbuser.com proxy, needs authentication too.
I installed Gizmo but it only works on their network and I can't connect to Voipbuster's proxy (right?)
Any solution?

2. F***** Windows
Google talk at n800 is nice, good job integrating it to Matchbox.
But hey! Who the hell uses Windows? I can't call to my friends because there are no Linux clients (wtf, there is for maemo but no others? Am I right?)

3. gtalk2vooip
Googling with this is bloody slow, so I have no idea what is this service / tool (?)
A solution to my SIP problem?

4. "Hacking"
I've already installed xterm, wget, nmap, kismet, and some others...
What "power tools" would you recommend?
And what do you have in your sources.list?
What does the red pill exactly do?

I'm pretty sure someone here recently posted a way to use any SIP server with Gizmo. As for Gtalk2voip, it connects Googletalk to cell and land phones.

At login screen in Gizmo, check box "Login to second account". Enter server, username and password for your SIP server. And then 'OK'.

I recently came across a curious project, http://sourceforge.net/projects/tp-sofiasip. Given that current N800 supports telepathy framework, I wonder if this tp-sofiasip thing will get ported to the platform at some point...

Anything supporting XMPP would do. Gaim or miranda, for example.