It will be interesting to see if porn.sexy sells for in the registry's sunrise auction, if it sells initially, and for how much.

It will be more interesting to see what is done with it and how it is marketed, should it sell.

porn.sexy or porn.gay seem like brandable names to me. porn.shop does not seem branded ...

I really see this as a way of freeing up good brandable names in new gTLDs.

A lot will depend on default browser and search engine behavior -- that has been changing and search engines will have to adapt or die to remain relevant.

My best advice is to file trademarks now to protect your valued domain brands that may not be trademarked -- at least if they are trademarked and registered with the Trademark Clearinghouse they will be safe from cybersquatting in many gTLDs.