The company is taking aim at reviewers who solicit business promising to write “positive or 5-star reviews” for products sold by third parties on Amazon.

Share story has stepped up its battle against suspected bogus reviewers, filing a second lawsuit this year against unnamed individuals who offer $5 to submit upbeat product evaluations on the site.

This time, Amazon is going after reviewers soliciting business on Fiverr, an online marketplace for freelancers. The site, a hot startup that raised $30 million from investors last year, pairs people with work that initially cost $5 a job, though prices of jobs now vary.

While it might seem counterintuitive that Amazon would block glowing reviews of products, the company believes that deceiving customers will hurt its business in the long run. Moveover, fake reviews also harm third-party sellers who don’t game the system.

In its suit, filed Friday in King County Superior Court, Amazon alleges that many of the Fiverr reviewers promise “positive or 5-star reviews” for products sold by third parties on Amazon’s site. Some of those reviewers encourage sellers to “create the text for their own review,” according to the suit.

Amazon did not name Fiverr as a defendant, and noted that it has “successfully requested removal” of bogus reviews.

“Fiverr has a takedown process we have used, but it doesn’t solve the root cause,” Amazon said in a statement.

For its part, Fiverr did not dispute Amazon’s allegations regarding Fiverr freelancers.

“As Amazon noted, we have worked closely together to remove services that violate our terms of use, and respond promptly to any reports of inappropriate content,” Fiverr said in a statement.

In April, Amazon sued three websites for purveying fake reviews. In the new litigation, Amazon notes that most of those sites have since closed. The company said it has “taken action” against sellers who used those sites to obtain fake reviews.

“We continue to use a number of mechanisms to detect and remove the small fraction of reviews that violate our guidelines,” the company said in a statement. “We terminate accounts that abuse the system and we take legal action.”