Under development: Cool and better way of writing user guides & API docs

Hi Everyone,

For a few days, I am thinking on building an online service where developers, SaaS owners and software owners will sign-up and start building user guides, API docs easily and quickly.

I have some nice ideas to make the service "worth" to pay for it such as user guide templates, mobile device support, interaction, etc.

I just built a landing page for my service:

http://www.userguidez.com/

It will be reasonably priced service with 15-day trial in the beginning.

In short, you will be able to create "cool" user guides and API docs just like;

CampaignMonitor's Help Section:

http://www.campaignmonitor.com/api/getting-started/

MailChimp's Help Section:

http://kb.mailchimp.com/article/troubleshooting-the-mailchimp-signup-form-page-on-facebook/

Wufoo's Help Section:

http://help.wufoo.com

Or something like;

http://www.watchguard.com/help/docs/wsm/11_XTM/en-US/index.html#en-US/wireless/ssid_broadcasts_enable_c.html

What do you think? Wondering your thoughts to test my idea.

Thanks for your time and help!

Sean