It appears that the founder’s home has been raided as well:
On Friday, federal law enforcement authorities seized Backpage domain names, including Backpage.com and Backpage.ca.
In addition, the Arizona Republic reported that on Friday morning, law enforcement raided the Sedona-area home of Michael Lacey, a co-founder of the site.
For years, Backpage has acted with impunity as a place that offered thinly veiled online prostitution ads. In December 2016, Backpage CEO Carl Ferrer and his co-defendants beat back a state prosecution in California.
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However, with the recent passage of FOSTA and SESTA by both houses of Congress, that shield is about to be removed for sites that allow sex work ads once President Donald Trump signs the bill into law. That new bill is aimed squarely at Backpage.
Not fond of bills of attainder, which FOSTA and SESTA come close to, and not fond of the ancillary effects, with sights likes Craigslist terminating their far more benign personals sections.
I rather expect to see these laws, and the seizures and raids, extended into other areas of speech in the not too distant future.