block adds

Adds custom keyword searches to Safari.

Adds new stock photo collections.

Adds InfoCard support to Safari.

Adds ability to copy to, move to, or go to recent Apple mailbox.

Adds enhancements to iChat.

Adds followup item to emails and contextual menus in Apple Mail.app.

Block access to incoming and/or outgoing mail servers and websites

Automator action adds sequence number to files.

Auto-magically adds lyrics to songs in iTunes.

You can adds functionality to iWeb with iTweak.