A brief Googling of the site came up with only two kinds of content. The people who were calling them a scam, or just scum, and the ones praising the site.
Notably all positive review sites had lots of anecdotes and explanations about how great it was, and a link to pay the fee and join. The first is typical of scam sites, the second a dead giveaway when you are reading a site that claims to be a review. At the most there should be a link to the site. And it should be subtle, not a big Buy Now! button.
Is that proof of less than honorable intentions? No, but I'd have to do a lot of research before I'd sign up with them, let alone give them my credit card number. Even supposedly free membership sites have been known to sneak some small text extra service (that charges) into that "Submit" button.
I use several of the free sites that The Alternative suggested. There is enough content there to keep you reading for a good while. And they really are free. Moreover they have proven, honest reputations.