I have tried. MY N900 gives me the option to make a video call and I can see my image in the screen, but no video back from them and no video is seen by them. I tried it over WiFi, directly hooked to a LAN and a Verizon wireless card on the Mac. No video to or from the N900. Also had the N900 connected via WiFi and through T-Mobile and a full 3.5G signal. To verify it was working on the Mac, I did a Skype call to a PC (with no camera) and it worked. Next I'll hook a camera up to the PC. Still playing with the Mac version, but right now I'm not having much luck.