Siftery has repeatedly engaged in Twitter spam. Here’s one example account, @SifteryHello that exists solely to mention other companies and individuals: <a href="https://twitter.com/SifteryHello" rel="nofollow">https://twitter.com/SifteryHello</a><p>Check out the tweet history to see what I mean. They sent thousands of tweets from this account (and very possibly others), solely to get visibility for Siftery from the customers/others who search for the company's Twitter handle.<p>They take the same approach to other mediums. Regarding mholt’s comment, here’s another one: <a href="https://twitter.com/guusdk/status/909773952561696769" rel="nofollow">https://twitter.com/guusdk/status/909773952561696769</a><p>I can’t imagine ever trusting a company or person/team who does this.<p>Update: Here's another medium that Siftery spams, albeit at a lower volume - HN itself: <a href="https://news.ycombinator.com/submitted?id=ggiaco" rel="nofollow">https://news.ycombinator.com/submitted?id=ggiaco</a>. ggiaco, an employee, submitted ~100 low-value Siftery pages about companies (rather than, say, the companies themselves, or sites he actually liked).<p>Update 2: Here's a second Twitter account, @SifteryFeed, which does the same thing as @SifteryHello: <a href="https://twitter.com/sifteryfeed" rel="nofollow">https://twitter.com/sifteryfeed</a>. Example tweet:<p>> "Are you using Apache Hive (@TheASF) and recommend them? You can do it here <a href="http://siftery.com/some-landing-page" rel="nofollow">http://siftery.com/some-landing-page</a> … "