I know there was someone in charge of ccTLD, and used just that TLD for personal e-mail (i.e. no dots). That would throw off a lot of validators, but I suppose

I know there was someone in charge of ccTLD, and used just that TLD for personal e-mail (i.e. no dots). That would throw off a lot of validators, but I suppose it also was good to avoid all kinds of robots that were scanning webpages for emails.