CiviCRM Community Forums (archive)

There is no way to do this automatically. The closest you can get is to create a group called "Signed up online" and under your profile's advanced settings under the option "Add new contacts to a Group?" add them directly to that "signed up online" group.  Then periodically, add an activity to all members of the group (after searching for them and using the "more actions" menu).

Once you add an activity you should remove those members from that group so it can serve as your working list of those who signed up online but have not yet been marked with an activity.

hope this helps
tony

I have been thinking about the above (non-php version) and in terms of using a standard profile, one issue is what happens to data the person entered in to the field if they then submit a subsequent request/comment - as it would get wiped if a match was made -  obviously when Multi-records are able to work with Profiles this could be a good simple solution. (i think)