O

On-theme -

Refers to content specific to a particular topic.

Open Directory Project -

Also known as DMOZ. This is a free very large directory run by volunteers. This database is used by many search engines on the internet. We recommend you consider listing your business in DMOZ

Optimisation -

This term refers to the process of modifying and marketing a website for higher rankings in search engine results.

Outbound Links -

Links on your website that direct traffic "off-site" to another website (opposite of 'inbound links'�)

Overture -

The original leader in PPC Engines, now owned by Yahoo! Delivers PPC services to many search engines.