Shap

That's a great question but far too long an answer I think and to top it off I'm a little out of practise and generally really bad and turning my ideas for design into words LOL ask my former staff

Here are some of my thoughts on each.

Tour page
I think it's important to cater the tour page the to traffic hitting it. You have someone coming from a Lisa Ann video on RedTube don't have the first 10 girls they see be blonde, flat, 18 year olds. It's hard enough to sell to catered traffic never mind trying to sell everyone with one approach. Cater the tour page and try to show what you are about. I am a big fan of a tour page that grows and changes as the site grows and changes. It's important for prospective members to see that your site is a living breathing animal. I think many of your best members might not join the first time they see your site. You are going to have to earn their trust. It's a marathon not a race. If they don't join today that's not the end of the world.

Join Page
Join page is interesting. You have to a/b test non stop. We tried so many things I thought would never work and I was proven wrong. Test test test and test some more. Any time not testing is a potential lost opportunity. Clean pages are best. As simple as you possibly can would be the way I'd opt for.

Members Area
I built Twistys members area based on the Karups members area. A huge vast area that seemed never ending. So many members areas have a finite feel to them. I think it's important for the members area to be so well laid out and so easy to navigate that there are no moments of doubt in the members head. You want to make sure your best content rises to the top. It's obviously important to have a chronological aspect to your site so steady members can always see what's new. But you always want to be sure new members don't only judge your site and your most recent update but also on your best available content. Just because a video was uploaded 2 years ago doesn't make it any less hot to somebody who is seeing it for the first time. Also you have to be a lot like google. You want your member to be able to search for exactly what they are looking for but also you have to show them something that you think they may want even if they don't even know it. We built that feature into Twistys a long time ago before it was easy to do. Nowadays it would be even easier. Cater to them. Clean layout. The funny thing is the cleaner the layout the less shit you'll take for any ads you add to the members area if done right