About: http://webisa.webdatacommons.org/258903240

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Yep spam is a constant problem, currently we use Spamassassin primarily, and as spammers change tactics it adjust to some degree as it recognizes those and fights back.
http://www.w3.org/ns/prov#wasQuotedFrom	sitepoint.com