I know some of the people surfing the powder toy use some sort of adblock extention or program. If you don't disable it for this site (Which you can usually do by changing some setting) then its cutting into the non-profit revenue stream keeping the website afloat. Think of it as repaying the developers of powdertoy for all their hard work and effort.
As to quote the top right "Please Don't Block The Ads :("
This regards adblocking not https :3
I block most ads, particularly image/flash ones. I tried turning blocking off on here, but found the "Download now"/"Play now" ads (that don't actually indicate what they're trying to get me to download) annoying, so I turned blocking back on.
I do sometimes tolerate relevant adverts, but I have no patience with adverts that don't indicate what they're promoting, and seem to be attempting to mislead people into clicking by just saying "download now" on a website which has something that people want to download (TPT).
That text comes even when I don't use adblock, I haven't even installed adblock...