Picture galleries might not be appropriate for commercial sites, but a talk forum can be a useful addition as it gives people a chance to ask informal questions and lets other people see that you can and do respond to you customers.
The down side is that people can post material that you might not want to have on your site and which might reflect badly on you. Of course you can require people to register before they post, but that isn't always enough to stop the problem and can also put people off.
Daddy and a Bee can set up photo gallery and talk forums for your site which are customised to minimise spam postings and registrations, and can also offer a moderation service to ensure that all members and contributions are vetted to avoid any embarrasment.