Since 1975, in order to improve earthquake detection and collect useful information, the European-Mediterranean Seismological Centre monitors the visits of earthquake eyewitnesses to its website and relies on Facebook and Twitter.
自1975年以来，为了改善地震探测和收集有用信息，欧洲-地中海地震中心（英语：European-Mediterranean Seismological Centre）监测地震目击者对其网站的访问，并依赖Facebook和Twitter。