Everyone loves a good honest review.

I don't think there are copyright issues as long as you are honest. I receive several free products to review and I have to be sure to include in my review a statement like: I received this product for free in exchange for an honest review.

Otherwise, I see no issues :))

Reviews are fantastic content to have on your site, people are always looking for information and opinions. Just make sure to do your keyword research to give your content the best opportunity to get ranked high in the search engines to generate that traffic to your site.

No none what so ever

No hidden costs at all, unless like a few people mentioned you would like your own domain name which is a low monthly fee of approximately $10 - $15 depending on where you buy it.

But you don't have to buy your own domain unless you want to, you can use the free siterubix domains.

I wouldn't consider it hidden, but domain names are a separate purchase. You are not required to purchase a domain name to have your website rank well though. I know several people who do just fine with the whatever.siterubix.com subdomains. I purchased one because I think it looks a little more professional.

Jaaxy would also be a separate purchase if you wish to use it. Again, not a requirement though. I just use the Keyword Tool here inside Wealthy Affiliate and Google's keyword research tools.

You can succeed just as well without having to pay anything extra outside of the Wealthy Affiliate fee.

The only additional thing I had to pay for was my domain - which was under $20. You can stick to the free siterubix sub-domain sites but it is recommended you purchase your own domain. You can purchase this outside of WA if you wish.