What are some unique but effective ways to market my business online?

fyi...I do web hosting, domain registration and have a website builder with a 10 day free trial.

Below a few ideas that you can do more research into and see what might work best for you.

1. Search Engine Optimization of Web Pages

2. Social Media Marketing (myspace, facebook, etc)

3. Social Bookmarking Marketing (digg, reddit, etc)

4. Article Submission

5. PPC\CPM Advertising (This is hard to get a ROI)

6. Link Exchanges (Exchange links with sites directly related to yours, it can help provide some decent traffic since those visitors can actually find a use to your site.)

Again, this is just a quick list of things for you research on, there are thousands of different methods in increase traffic to your website.

Signature in forums.
articles about the service
ads on usfreeads.

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Try these:
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Hope this helps! Good Luck! Have a great day!