It can be especially useful for support forums, where moderators are used to have long signatures with some rules/information, but the administrator doesn't want the users to have such long signatures.
It is configurable through the ACP (ACP -> General -> Site -> Maximum signature length)
|No max chars in signature for certain usergroups.zip|
|Description:||Read the txt file||
|Filename:||No max chars in signature for certain usergroups.zip|