You can rate them. There doesn't appear to be any 'vetting' of experts - so take care.
Site has a Dutch and English introduction.
Horse Talk - General horse site covering laminitis, hoof and healthcare, equine photo and art, clipart, bulletin boards, riding tips. HorseClick - Information about diverse equestian topics and links directory. HorseWeb - Comprehensive horse links directory. Mr Horse - Over 2000 pages for horse lovers. WebPony Horse Search Engine - An international search engine offering a directory of horse related sites in many categories, plus submissions accepted.