Said a hundred times already, but sometimes it takes repetition to get through to certain people.
Blockland and Roblox are fighting over the same target market, or in other words, the same player base. The only difference is is that the Roblox community (from what I've heard) makes a big deal about the "competition, where the Blockland community downplays it.
Minecraft is similar, but is not in this "competition". The reason for this is that Minecraft uses a universal block to build with. Blockland/Roblox have a variety of different blocks.
From a Blocklander's perspective on the whole "war" between Blockland/Roblox, I'd say ignore it. Let Badspot improve the game and market it himself. If you do want to get involved, don't spam or argue about why Blockland is better. Actions speak louder than words. Instead, simply build great builds, invent amazing add-ons, etc. That is what will help Blockland gain popularity and a larger market share.