Don't know if it's a possiblity, but ... apart from Herfølge, my favourite team (for 20+ years!) is Swansea City! And a couple of blokes have been running an amazing website (http://www.scfc.co.uk/) for years. For many years completely ad-free (miss those days). However, as the site grew and costs grew accordingly, it was decided to try and keep it a free site - and we all agreed they should give in and get ads. They do now, but I think you'll agree it's not too bad. Keeps the bills paid though.
Just thought I'd mention it. (herfolge.com pretty much does the same...)