Finally - the new version of Things on iPhone can synchronize with Things on Mac desktop.

It actually works - no strings attached. Assumed that:

1) the WiFi on iPhone is on

2) iPhone and Mac are on same network (so that Bonjour magic can work)

3) the Mac Things is running when you start Things on iPhone

the synchronization happens automatically and is VERY fast (few seconds max).

Finally a portable GTD application that works for me :-).

PS: Things is very nice implementation of GTD. If you are not into GTD cult, do not bother - or try reading this, this and this first ....