There are a number of common issues that can be easily fixed without contacting Google developers for help.
Page not refreshing:
If news or posts are not getting updated in your webpage, then maybe your web browser is not displaying the live page but a cached version of it. Clear the cache and refresh; the page should be updated.
Custom Search gives "forbidden" error
It's probably not a code fault, but it might be your AdSense account that has been rejected for some reason.
Trouble with Maps
Incorrect displaying of maps could be due to a number of reasons. Before asking for help, there are a few steps that can be taken:
- Enable JavaScript and Active X
- Update DirectX
- Clear the cache of your browser
- Check the security settings of the browser
Google Docs
There are several known issues with the Spreadsheet and Presentations. Luckily, Google provides a "comprehensive troubleshooter" that can help sort things out.