If you are holding an iPhone right now, you may want to know that webmasters out there have started to optimize their sites for viewing on the iPhone. Mashable has come up with a list of over 20 websites that are currently compatible with the iPhone’s browser, here’s a few of them:

iPhone Optimized Websites

(Warning: some of the links below only work with the iPhone!)

1. Google

2. Facebook

3. Ebay

4. Twitter

5. Amazon

The full list here.