There was a post where he explained what A+Bert meant, but I don't recall what it was. Do you?Whenever he left his home (i.e. posted elsewhere) he did it as "A Bert". That's all I can recollect seeing about his screenname, except he must hold the record for number of variations of a screenname: A+Bert, A Bert, A+ Bert (on probation)...
The actual story as to the missing plus sign is somewhat more benign. Bert was on a short banning, as I recall, during one of the software updates, in fact it may have been one that required new cookies, but anyway, when Bert signed back on the software wouldn't give him his screen name with a plus sign. He lobbyed, whined and got good natured support for he, as a renowned crummudgen to get his plus sign reinstated. Finally, Jim or John got tired of the continuous harping and did a work-around to restore it to him. Probably took a dozen hours, but hey, these guys are pretty darn soft hearted because they know what the forum means to even some they tire of.
Bert was a good guy....just not a people person....LOL