Islamic State has issued a chilling call to its followers to use online classified websites such as Gumtree and Ebay to lure unsuspecting people to their deaths.

The latest issue of the extremist group's English language propaganda magazine Rumiyah suggests several ways IS followers can take as many people as possible hostage and slaughter them.

It suggests posting fake ads for items for sale on Gumtree and Ebay to trick people into meeting them at a certain location so they can pay and collect the items.

"Online sales by way of buy and sell websites such as Craigslist, Gumtree, eBay, the Loot, and others are an alternative means to luring one's victims," an article titled Just Terror Tactics suggests.

View photos ISIS targets Ebay, Gumtree to lure people to their deaths. Photo: AAP More

"The viewing and collecting of the item should be arranged to be at the location where one seeks to carry out his operation. Upon the target's arrival, one can then proceed to initiate his attack."

Gumtree is urging users of its online classifieds to report anything suspicious.

"The safety of our community is our main priority and we urge anyone who thinks they've come across anything suspicious or concerning to report it to us," a spokesman said in a statement on Wednesday.

"We encourage all users to visit our Help section for tips on how to have a safe and successful experience and to be vigilant when using any online marketplace."

The article also suggests using online ads for fake jobs or properties for rent as another way to lure people and details how to subdue and restrain them before killing them.

Australian terrorists including Lindt Cafe gunman Man Haron Monis, Victorian police killer Numan Haider, and radicalised teen Farhad Khalil Mohammad Jabar are all praised in the article for setting "heroic examples".

View photos The article praises Lindt cafe gunman Man Haron Monis. Photo: AAP More

Supporters of the extremist jihadist group are urged to take as many hostages as possible in busy, enclosed locations such as nightclubs, cinemas and shopping malls before killing them as quickly as possible, rather than holding them for ransom.

View photos Hostage takers are instructed to target busy, enclosed spaces. In November 2015 Paris club The Bataclan was targeted. Photo: AAP More

Story continues