Could you be a tad more specific on what your looking for? Base on the 50-50 split that you mentioned, it looks like your looking for someone to invest his own money and put it on your project but base on the first few words of the title or the very first line, your looking for someone to promote your website and more like a marketing manager that your going to pay in which it will be on a pay as you earn basis so which one is it? If it's the latter then I might be interested on it (to mange and handle your website promotion).
marketing expenses are still expenses, those are not gonna be counted
of course I would like to be made aware of the strategy, preferably a cheap one since the website launch has been itself cheap (I already had the company to set everything up) and I just want to see if there can be good earnings before paying to get advertised on a broader base (CoinDesk etc type of advertisement).
so more like a manager
I don't mean to sound rude, but why do you need a partner for that? You can just set up some cheap advertising yourself to start...
It would save you quite a bit of money in the long run and it's not really that hard. You can always hire cheap freelancers to create promotional material such as banners etc.
You would be keeping all of the equity yourself, without that much extra work.