I run pastebin.com, and maintain it daily. I check for abuses of the service, block IP addresses of serial offenders and try to ensure it provides a speedy and useful service.
I make the software available for others to use and improve upon too.
pastebin.org is one such site, but I’m starting to get emails from people who’ve used that site and are now infected with the Win32/Alureo trojan virus. In addition, the site seems to have been compromised in other ways, with extra advertising banners and popups.
I’m not responsible for that site. I’ve tried to make contact with the registrant listed in whois records, but not had a response.
The moral of the story: if you want to stay safe, stick with pastebin.com!