Last week, PBWorks founder David Weekly found out from some customers that his hosted collaboration site had been blacklisted by Symantec for hosting malware and, thus, visitors to any of the 10 million pages on PBWorks were being warned that the site wasn't safe.

"(Damn) you, Norton Safe Web. Whenever one file on one PBWorks space has a virus, all of PBworks is marked unsafe?!" a frustrated Weekly wrote on Twitter and Facebook on Thursday. In a follow-up interview, he said: "That's tarnishi...