When someone mentioned trail and error, I posted right after that, "er do you mean trial and error? Yep, that's how we've learned". It is true. You can't try something new and not try it.
I know Facebook has changed. A lot. But that doesn't mean it doesn't work for everyone or everybody's business...trust me, there was a time on CraigsList (r) that a company posted they wanted someone to help them market their business. I was somewhat new at it, but decided to help anyway - and I created a fan page to help their business, but it didn't grow. I know, weird right? No. I mean, you can create something (just like a business or a website) but if you don't tell people about it OFF LINE AND ONLINE then NO ONE WILL KNOW ABOUT YOU!
I just was reading now about another post that Facebook may lose some followers or fans. Let me tell you something, I started a brand new page not even a year ago called Renaissance Performers and Merchants Renaissance Performers and Merchants and well, it's over 1,300 people. Why? I think it's because I'm helping others similar to my "avatar"/"tribe"/"community" learn about how to market themselves or promote themselves.
Shoot, last I checked Facebook is still free, and if it's that kind of resource I can still use, than dang it, I'm going to use it. Of course you have to be social on your fan page, that's why it's called a social network.
Twitter is still a great thing to help market our festivals, that is why I use them. I like Google + too, another resource that I can use to help promote our festivals. You name it, I'm probably on it to try and help promote our festivals. Why?
I used to be on LiveJournal (LiveJournal) but haven't been on that for a while, I have tried so many sites my eyes hurt. Some work, while some I don't really bother going on after a while...again, it IS Trial and Error.
What works for me might not work for you, and what works for you might not work for me. I guess my point is to keep trying. That is how you will succeed.
Best of luck!