The longest current OpenStreetMap username is "bwdlqwbdjlbqlwdjbqlwjdbqljwbdlqwjbdlqwjdblqjwbdlqjwdbqlwjdblqwdblqjbdlqjwbdljqbwdljqwbdlqbwdbqwdblqwdlqwbdlbdlqbwldbqlwbdlqbwdlqbdlqbdljwbdlqwbdwlbqlwdblqwbdjlqwbdjlqwbdljqwbdljqbwdljqbdlqwbdlqbdljqbdljqbwdljbqldbqlwdbljqwbdljqwdbqlwdbqlwjdbqlwdbqlw".
Appending "_1" would've been better.
why?