I like it the way it is. I would turn have turned around and left if I had to pay $6.50 to see the hair info. I found this site looking for reviews for a product, and I can find that free elsewhere. It was not until I saw the sheer amount of information here that I decided to sign up, and not until I got too curious about what I was missing that I decided to pay. I am willing to bet that a lot of people come here now under the same pretenses. Just because we know all that is available here is not good enough. You can count on a lot less interaction and new information by making everything paid only, not to mention that it will cut into the open feel of the community.
Limiting how many posts one can see for free would be frustrating, too. For example, looking up "deep conditioner" would bring up way more than 50 posts, and from my experience, one has to keep searching and keep searching to find really great information about deep conditioners--not to mention reading through all the conversations having nothing really to do with the topic at hand. I would assume this place has very little information if I had 50 posts a day to choose from.
As for the stolen pics and coupons and all that, well. Sorry. It is the Internet. Anything you say and anything you upload runs the risk of being stolen and used by someone else. If not by coming here, then by using search engines and archive sites. It is not up to the admins of this site--or any site, for that matter--to 'protect' us from that. It is up to you to decide whether you want to take that chance. You can watermark your pics and put them on a private server where you can better control access to them. Whatever methods are put in place will not do much, in the long run. How do you know people stealing pics are not paying members, first of all? How do you know paying members are not telling their friends and family about 'members only' discount codes, or putting them on blogs none of us know about?