I'm involved in ecommerce and therefore read a fair amount about 'distinguishing' yourself from the oppostion, finding your unique selling proposition.
I subscribe to a really brilliant small business owners nesletter and when I was reading it the other day I realised that the guy who runs it has lighted on an amazing business idea.
His USP is that nobody else is him. He brings all his interests to the nesletter, somtimes there are sci fi references, sometimes a bit of psychology, always a couple of examples. Often a few disparate bonkers ideas that suddenly pull together at the end and really make me think about my business. Absolutely nobody else could write this newsletter but him.
You said you are looking for a purpose for your website, which is very encouraging because it insinuates that you want to do more than make money. The purpose is tell your visitors things that only you can tell them, in a way that only you can tell them.
When you're trying to get to sleep tonight pick one of your possible topics, think - if there's one thing I could tell meg8 I could this it would be that...
then you can come back tomorrow and tell me or make it a the first page for that site.
Facts are important, they are what you may source from the internet, but it's the nkad05 in the webpage that will give it purpose.
The mind often works by association, keep a pencil and paper by the bed and write down all the ideas that occur to you once you've told your mind to think.
It works for me, but the insominia is becoming a problem...