It's not a 'war'
It's probably one child enthusiast sitting around the ROBLOX forums spreading ill rumors about a random game he designated to call it's rival, than got the extremely gullible/ semihandicapped admins to spread it around more, spreading it to the actual userbase, where random kids thinking they'd be heroes or something if they came over and flamed us for being here and be openly accepted among their little virtual friends.
On the other side, in Blockland, we stumbled across ROBLOX and started joking about it in off topic. Some kid on our side randomly thought "HAY ALL THE COOL GUYS ARE JOKING AROUND ABOUT THIS GAME, MAYBE IF I RAID THEM THEY'LL THINK I'M AWESOME AND GIVE ME ADMIN ON ALL SERVERS SO I CAN BAN EVERYONE JAJAJAJAJA" (or atleast, something along those lines) and spammed 'DESU' on their forum.
The stupider population of ROBLOX (relatively?) thought that they we were raiding a minute or so before they did and believed that it was an excuse to raid them. So they did, thinking that they were doing a great righteous justice.
And here we are now.
I'm also thinking that a troll from neither company is in this somewhere, 'pretending' to be ROBLOX and spewing crap all over the blockland forums to get them pissed at eachother and start a big, internet-shaking, chuck norris worthy fight.
Or, atleast as chuck norris worthy as a fight between illiterate (Mostly?) preteens and edgey teenagers can get.
[/robloxrant]
