So far the only info we have is on the wiki page: "Stewart Butterfield wrote in January 2011, "The gum tree (and spigot) were scratched over a year ago. But, hey … maybe they make an appearance one day :)""
Wads of hardened gum everywhere. If you left home without your barnacle scraper, you wasn't never gonna make it back. Hundreds of us chiseled our way to the source of it at the gates of Hell One. But it were a trap, see? The Rook was waiting. Him an' his horrible beastie, the Gum Daddy. An' we fought 'em, girlie. We fought 'em for the sake of Ur.
Saw me a whole streetfulla our boys--pious, meditatin' sonsaglitches--get squidged 'neath a torrent of molten gum. But, Gren bless 'em, they got the Rook on his heels! Brave lads. The Gum Daddy, though...he didn't flee. Just snorted an' snarled an' hurled his gumdrops left, right, an' center. Whoo! I tell ya, lass, they spattered somethin' fierce! Shoes and shirts stuck to everything, you never seen a bigger waste of credits! An' glitches plastered to rocks, signs... Poor Echo got blown into the gum pit. Had to watch her sink and couldn't do a thing. An' all the while those gum trees of his kept spittin' minty-flavored death at anyone who got close.
Finally, those of us was left gathered up all the shirts an' shoes an' socks an' pants we could. An' we built us a wall. I remember t'was Yuka who lured the Gum Daddy to it. My old friend, Yuka Puddenhead. She came jumpin' like a batterfly out of Naraka, dodging big huge glops of gum there weren't even flavors for, with the Gum Daddy smack on her tail. But this was afore the days of triple jump. She was gonna be just a squick too slow. An' she knew it. So she baited the Gum Daddy into firing at her when she passed in front of our wall. I've never forgot the peaceful-like look on Yuka's face just before the gumdrop hit her. It were the look of victory.
Victory with the smell of spearmint. The gum fused our wall into something harder 'n molybdenum, and sealed off Hell One. Forever, I hope. You could still hear the beastie roarin' behind the barricade. Might be roarin' still.
Never saw another gum tree since, and hope to Gren I never will. Don't know how many good glitches we lost that day. Don't want to.