I can't see any username with davidonpda on bitcointalk. Maybe they have changed their username.
Changing the username will still link the previous posts to the new name since the "
User ID" (
u=0000000) wont change.
Probably a deleted account and the user's posts were turned into guest posts.
This is probably the explanation on the Anonymous "
edited by davidonpda" post:
https://bitcointalk.org/index.php?topic=67541.msg789906#msg789906The user requested to change his posts to appear to be posted by an 'Anonymous' guest, and deleted the account as well. (
the OP of that thread didn't, just 'delete account')