Provides XRumer, a powerful blackhat spam tool.

blackhat SEO spam tool/botnet.

Malware
deals in spamware

selling and hosting spambots

Sells Xrumer, an automated, highly invasive spamming engine used by scammers for black-hat Internet Marketing.

Reference:
https://en.wikipedia.org/wiki/XRumer

spamming spammers hitting spamtraps

http://www.spamhaus.org/sbl/query/SBL192553

Самое мерзкое, что этот сайт рекламируется в Яндекс-Директ.
http://i.imgur.com/38Pe8hl.png

This software is used to spam forums with bot accounts,
It can be used for any site, but they use it themselves to create their own traffic.
It only exists to sell itself.

Provides harmful tools for Blackhat SEO

The site itself is not dangerous, or the software to the user, and that should be the distinction for a rating of a site. The browser isn't being attacked or tricks being used, so its safe to look at to learn about this technology.

The software that these guys rent does create spam on other websites for the purposes of ranking in googles on their money-sites websites.