I'm aware that there is a main.db file that is stored in a Windows directory. On XP:

C:\Documents and Settings\<windows user>\Application Data\Skype\<username>

But I just downloaded Skype onto my Android and noticed that all chats are sync'd. So to me, this suggests that the main.db file is not the only storage being used (because it is obviously not on my phone).

Are contacts and chat history stored in my online Skype account? Does anyone know where I can find more information about this? I read this thread: Does skype automatically save chat history to the cloud?

And how do you explain the sync'd chats?