Is there a way to see only new posts since last being logged in? I find it cumbersome to wade trhough all the topics. Perhaps I am just missing something?

I have the same question. I hate loosing that much time!

within each subforum there is a forum options button at the top right. click on that and you can mark the forum read which will mean all current posts turn from new to old.

can't do that for all forums within Netherlands unfortunately, but each individual subforum (like this one) has the option.