which function will return current site URL

WordPress Codex site is built on?

How many times a minute can spawn_cron() run?

Which capability is required to edit menus?

When localising text within WordPress, which function is used when context is required for the text translation (when a word can have more than one meaning)?

What's the way to enable Atom Publishing and XML-RPC protocol?

Since WordPress 2.7.0 you can perform HTTP GET and POST requests with the following methods

What is the best way to add plugin functionality to a theme template without breaking the theme if the plugin is not installed? (Example plugin: Foo)

Which template tag should you use to output the post title inside the loop?

What argument do you pass to WP_Query to limit the number of posts shown on each page?

What function will you use to localize or pass data to script files?