A fled noder is a low-level noder that appears to have permanently left everything. The majority of these noders are from the Everything 1 epoch. However, if a noder has a good number of nodes and xp, he is generally considered to be retired, and not fled.
The main difference between the two is that a fled noder probably did not have the skill or writing capability of the retired noder, who
probably took the time to attend Everything University and learn from his mentors. Fled noders are relatively common
however, since out of 20,000+ users as of November 17, 2000, seeing more than around 50 people online at once is a rarity.