As I mentioned previously not all orchid related websites offer RSS feeds for their content but I'm discovering that with Yahoo Pipes it's possible to create feeds for pretty much any content.
Here are a couple examples...
AOS Articles - A feed that I created for the articles that the AOS occasionally adds to their homepage.
SBOE Orchid of the Day - A feed that I created for the Santa Barbara Orchid Estate's Orchid of the Day feature.
If you're wondering what to do with those URLs then please see
RSS for Orchid Growers.
One significant drawback of using Yahoo Pipes to create RSS feeds from scratch is that it's not very user friendly for people who don't know HTML or have never heard of RegEx. On the off chance somebody wants to give it a try then reply to this thread and I'll share a couple notes. Otherwise, if anybody wants me to create a specific feed then please PM me and let me know how many orchids you'll send me for my time