About: http://webisa.webdatacommons.org/203259533

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	As twitter is a free service... and Facebook, people are easy to to jump onto the bandwagon and try out... having to pay for it creates a barrier.
http://www.w3.org/ns/prov#wasQuotedFrom	opensource.com