Well...This shows $ spend on these games...Look:
Blockland:28517 Buys(BL_IDs[Status from 26 March 2011)
Roblox( >:[ ):More Buys than Blockland BECAUSE there is BC system,to pay every month/6 months/Year or buy once Forever.That's why Roblox is higher than BL on this chart.
Minecraft:Really much buys(More than 1.695.087 Buys).idk why...LOL...If people buy Minecraft,why they dnt buy BL then...Oh i know why:
Because BL doesn't have any Ads(Minecraft hasn't too) but you can really meet Roblox ads on some websites....
My opinion :3
Oh and another thing,just about BL:I've started to play online when I bought BL;and I was talking about BL to my friend for a week(about Zombie Mods and etc.)and I forced him to buy BL.
But one lol:He didn't liked BL because he even didn't completed Tutorial at first time.When he played Tutorial for second time,he completed it,and liked BL...