Is posting a link to 'Feed the Children' Website a spiritual endeavor, or spamming?

Well, I wouldn't call it spamming, but I guess I'd appreciate it if they were more upfront about being a Christian organisation. I'm used to being misled so I checked. It's not that I am opposed to Christian organisations, but I want to know what's what, and I am anxious (possibly unreasonably) that there is missionary work involved, which I do not want to support.