- Resource Management

- File management

- Security management

- Operating system services

Yes, mostly because the software industry trend right now and in the future is to use scaffolding tools like rails to build applications, both web and otherwise. One wouldn't want to pigeon hole themselves, however, into being proficient in only one type of scaffold or underlying language.

It's not difficult if your business has enough brand value.

Submit your site to various search engines and use Google's webmasters tools and use link exchange.