Right, so it’s not the most savory site, but it’s not unsafe, as far as I can tell?
Virustotal clears it, so does Quttera. Sucuri shows a SiteAdvisor blacklisting, but the info page shows no reason?
EDIT: Actually, SiteAdvisor is being all sorts of weird. Pages aren’t loading, giving “We have no data for the page you requested. You can check another site using the look up box below.”, and then loading on a reload. Any clues what’s going on? I can’t even request a review?
you are missing some vital info here … what site?
Derp. Sorry. It was in the title, but I didn’t actually put it in the body. Sorry. ^_^;;
hxxp://www.ryuutama.com/
yes, but when you google ryuutama you get lots of stuff…
urlvoid http://www.urlvoid.com/scan/ryuutama.com/
killmalware http://killmalware.com/www.ryuutama.com/
unmask http://www.UnmaskParasites.com/security-report/?page=www.ryuutama.com
Sucuri http://sitecheck.sucuri.net/results/www.ryuutama.com/ / http://www.siteadvisor.com/sites/ryuutama.com
Let us check that site. Following issues are being found up by web security test.
iFrame check: Suspicious
Just some observations. “An sich” this site may not bring harm, but the adblock tester is a rather aggressive and unfriendly way of approaching unaware visitors of the site.
I would not like to come to such a site with a stealth adblock tester, just a question of principle.
Normally I do not block main site ads and even allow script to run when I have found a site to be benign and secure enough to visit.
Also for reasons of security I block all third party ads & scripts. We had a lot of issues with Dutch sites spreading malcode through infested banner ads. Blocking these is a way to keep malvertisers at bay. I can understand a main site wants to spread ads, they need a base and income to uphold the site, but I am not going to enable click fraud, SEO spam etc. to support cybercrime and co earning from my clicks. Not saying that this site is anyway into these practices, no way, but that adblock tester got on my nerves somehow. Be open and frank about what you like to do, but do not adblock test stealthily behind my back.
polonus
Found this result, thanks polonus: http://guess.scritch.org/%2Bguess/?url=http%3A%2F%2Fwww.ryuutama.com%2F
Apparent non-30X redirect result when site scanned using their Guess tool or is the result of anomalous (non-standard) configuration.
Hi machain,
Wants some other angles to catch, see here: http://builtwith.com/ryuutama.com
Revealing is n’t it, all technologies used on that site in one,
polonus
Interesting. Really, what is the true purpose of this site?
The same as most sites. To make money. 
So… We’ve determined that they really really want their ad money, and they’re vulnerable, but still…
It doesn’t actually seem like there’s anything malicious. Just obnoxious. If we blocked every vulnerable site, we’d be blocking a large portion of the internet. XD
hello
I got an answer to this problem
Confirmed, no longer being blocked by avast!.
polonus