70-573: Top 5 answers

1. Client object model: .ExecuteQuery() is missing somewhere after Load method
2. Memory leaks, bad performance: site.Dispose() is missing
3. Permissions, sandboxed solution: RunWithElevatedPrivileges is either missing or not supported
4. Not the right answer: Changes in Web.config, overwrite standard SharePoint files, and modify registry
5. Always the right answer: change Onet.xml