Hi,
     I am developing a content management system based on plone.I have a requirement which is,
    " whenever an update occurs in the plone site ,a message  containing the place of update should be sent  to all the  members of the site."
     I have got two ideas,i don't know whether it works
     1>to query the Data.fs and retrieve data( i.e the object which has been updated) from it  and send it to all the members.  
     2>go to ZMI and in the portal_skins

/plone_form_scripts/  go to content_status_modify(handles the workflow transitions of objects)
 and  include a code over here such that the objects which have been updated should be found and a message should be sent to all the members.

 Now,my question is whether if any of the above can be done(i.e is it possible to query Data.fs while the site is up)  or is there any other solution for my requirement?If anyone knows an answer to this please  give me an idea on how to do this and if possible send me a code example.

Thanks and Regards,
  Karthikeyan.P L.