Disclaimers and signatures in general are very easy and quick to implement. Saying that if you are a small business running exchange 5.5 2000/2003/2007 and need to ensure that all users are setup with a standard Disclaimer and Signature or other advanced features you would normally need to use a third party software.
There is no better product than Exclaimer to achieve the desired results. In the Scenario where a client with over 50 users needed to add a disclaimer, Signature and auto-reply (to certain groups) with different responses. My only request to the client was send me a list of all user details and request all users to remove signatures before they leave at the end of the day.
An hour later after updating there Active Directory with staff details I was able to setup a centralised location for all Signatures and Disclaimers.
All user’s information is pulled in automatically from the active directory, and groups where setup with different auto-responses.