Spammers are experimenting with a new tactic to improve their success rate: setting up their own URL-shortening sites. The tactic lets spammers mask the fact that links they send in emails ultimately lead to sites where they can try to sell pirated software, prescription drugs, pornography and the like. Symantec.cloud.com says so far all the spammer-run shortening sites have domain names and are hosted either in Russia or Ukraine. It’s not clear whether this technique will catch on and become a routine tool for spammers.”]