Hi Schturman,

Thanks for using EasyList. The sync functionality is a bit experimental, but it works as follows.
You create an account on http://www.willemliu.nl/qt/maemo/easylist/ as you've already done. Then you log in on that website with your new account once you've clicked the activation link in the e-mail that has been sent to you.
When you are logged in, you will be presented with a text area in which you can type text just like you can in EasyList.
Each new line will represent a new item.
Then you click save to save the list.
In EasyList on the N900 you need to setup the sync account in the Settings menu. There you will see a few text boxes: username, password, url.
If everything is working correctly the url textbox is already filled out. You only need to fill in the username and password used for your web account on http://www.willemliu.nl/qt/maemo/easylist/. Then you press Save or Apply.
After all this you can use the Sync button to sync with your online list.

Hope this helps you.

Regards,

Willem Liu