[erlang-questions] your first choice?

[Imants Cekusins]

> XML or JSon?
Json. It is more compact and useful in browser.

> intellij idea or eclipse?
Intellij Idea is very good IDE. It works with a variety of programming
languages within a single project. Did not use Eclipse so can't vouch
for it.

> and before i buy a server, Win or Linux or ...?
both Win and Linux (at least some OS) support Virtual machines so you
can run Win on Linux or Linux on Win if you change your mind later.
Win is easier to configure. Most Linux-targeted programs are better
suited for, or work only with Linux. In capable hands Linux consumes
less resources and can handle higher load.