Q. Can I use SharePoint Manager to modify object properties?
A. Although SharePoint Manager is a handy tool and allows modification of certain object properties as well, this should generally be avoided. Always go via Central Administration or site settings for any modifications or configuration changes. It is easy to mess up your SharePoint installation via random and unplanned updates done using SharePoint Manager.
Q. Can I keep the AllowUnsafeUpdates always set to true to tackle any access related errors?
A. The idea behind AllowUnsafeUpdates is to protect you from cross-site scripting attacks. While at times it is lucrative to set it to true to escape debugging any access related errors, doing so would expose you to XSS attacks. Therefore, ...