Storing XML in Active Directory

Is it wise to store XML in Active Directory?

In my project an ECM is performing a night-job and is iterating through AD and is reading XML data from each AD group....

From stackoverflow

• For small amounts of XML data Active Directory (or any other LDAP) should be fine. I just wouldn't use it has my central database repository. You could extend the schema of the directory object your want fields on. But sometimes it's better to store blobs of data in an unused field.