HTC Magic Battery Life is around a day long. But there are some tips to improve that. The major problem is a lot of Android Apps always polling information from the web. So, I suggest you set the setting of update period to be longer, or even turn off update feature. I found the battery life is improved a lot, when I turned off NewsRob which is getting the rss from my Google Reader(You can imagine that is a big job). Secondly, you can install a task manager to kill the apps which is not using. It can save CPU energy consumption. And there are a number of free choices for Task Manager in Android Market.
I have installed Skype in HTC Magic from Android Market. That is Skype Lite. That is different from Skype Mobile Version in Windows Mobile. It cannot support SMS. And I tried SkypeIn, it seems to be not working. Moreover, I tried SkypeOut, that needs to dail a local number. For voice chating, it needs to dail a local number as well. But the text chating, it supports that. For VOIP, I think we still need to wait for the full version available in Android.
Some people are asking around, are there a Skype program in Android? Yes, please go to Market, and then search "skype". There is a Beta version of offical Skype. I have installed that in my HTC Magic. I will write a entry about that tonight.
I am looking into MSI X340. MSI claimed that is the world’s lightest and slimmest 13” notebook. That seems to targeted to MacBook Air. But X340 is a netbook, it uses Core 2 Solo rather than Core 2 Duo(2 cores cpu) which is using in MacBook Air. So, I think those two are targeted in two different markets.
Anyway, I like the form factor of X340. Thin and light, that is my style!