It's more of an SEO question, rather than Codeigniter.

[eluser]Simian Studios[/eluser]
Righto.. so I'm assuming it's a directory site.. as you know it is a VERY competitive market you're up against here, so its not altogether surprising if you're not high up the listings just yet, especially if you're a newcomer.

What keywords has Webmaster Tools decided are important on your site? That should give you an interesting insight as to what Google reckons is relevant. It's not always what you expect!

The best advice I can offer you right now is to start trying to promote and get backlinks etc - the longer your site's around and the more backlinks you get, the higher up the listings you'll appear.

Might be worth investing in some advertising as well, just to get things kick-started.