My father once said fifty years ago, "Nothing in this world is FREE anymore, not even water!"
The word "FREE" is an attention grabber, because no matter how much we proceed skeptically when we see the word "FREE" it still grabs our attention. It is like human nature to get something for free. Even our local supermarket advertises, buy one get one free, but what they do not advertise is how they raised the price on the one item so free is not exactly free on the second item.
How many of us have been burnt by work at home, make extra money scams, where they promote free or no sign up cost. The Attorney General, the Office of Consumer Protection, the Federal Trade Commission all work to stop such rip offs and scams, but by the time they close one down, five more pop up. Even some alleged churches and I say alleged because what kind of real Church would use such a promo or gimmick as Free this or Free that. There is actually churches that promote "Free Ordination" of course ordination is Free, it is a sacrament. What they don't tell you is how much they charge for ministry credentials. More so than not they are nothing but diploma mills which can be easily detected by the fact they charge for degrees or diplomas?
When you see an ad on the internet, the best rule of thumb is stay away from anything that states it is Free. Free will usually end up costing you more or it is nothing but worthless junk. Remember just because it says it is a church, doesn't mean it really is a church, it could be simply a website with a UPS store mailing address. Only satan would bait you with the word Free. Please be careful.