This could turn out to be a nice idea but I'd offer a fair warning here, if you have people from various companies on in particular and they turn out to be scam artists, it will be your neck on the line. You'll need to be very careful about who you let on and what you talk about especially in the realms of giving investment advice.
Also, it is worth pointing out that you could even be sued if your found actively promoting a company that rips a ton of people off and found liable. The financial sector regulators contrary to popular opinion can be absolutely ruthless to people who show up from the outside not knowing how to play by their rules.
Just a fair warning, in previous posts where I've commented on Bitcoin on so on I make it a point to seek professional advice before making a decision or carefully researching just so people can't turn around and claim it was something I said that made them lose money.
I think though if you want to just do commentary and have chats with people about various stuff then that's perfectly fine, but like I said, you enter in murky waters when you have people on who are out to promote their product.
So a disclaimer if you intend to do this, be sure to research your local laws and so on on the matter and ask for advice from a professional if you intend to do this ;P I don't want to discourage you, just making sure you know what you're in for.
I agree it's good to be careful and give disclaimers. I'll vet all of the guests and I'll try to make it more informational than anything else. Thanks for the advice!