▁social ▁media ▁gu idel ines ▁are ▁in ▁place ▁for ▁professional ▁usage ▁so ▁that ▁everyone ▁understand s ▁what ▁is ▁suitable ▁online ▁behavior . ▁Using ▁a ▁social ▁network ▁is ▁an ▁extension ▁of ▁an ▁off line ▁social ▁community . ▁It ▁is ▁helpful ▁in ▁keeping ▁connections ▁among ▁friends ▁and ▁associ ates ▁as ▁locations ▁change . ▁move . ▁ ▁Each ▁user ▁has ▁their ▁own ▁sp ider ▁web ▁structure ▁which ▁is ▁their ▁social ▁network .. ▁ ▁Virtual ▁communities ▁differ ▁in ▁that ▁users ▁aren ' t ▁connected ▁through ▁a ▁mut ual ▁friend ▁or ▁similar ▁background s . ▁These ▁groups ▁are ▁formed ▁by ▁people ▁who ▁may ▁be ▁complete ▁str angers ▁but ▁have ▁a ▁common ▁interest ▁or ▁ide ology . ▁Virtual ▁communities ▁connect ▁people ▁who ▁normally ▁wouldn ' t ▁consider ▁themselves ▁to ▁be ▁in ▁the ▁same ▁group . ▁These ▁groups ▁continue ▁to ▁stay ▁relevant ▁and ▁maintained ▁in ▁the ▁online ▁world ▁because ▁users ▁feel ▁a ▁need ▁to ▁contribute ▁to ▁the ▁community ▁and ▁in ▁return ▁feel ▁emp ower ed ▁when ▁receiving ▁new ▁information ▁from ▁other ▁members . ▁Virtual ▁communities ▁have ▁an ▁elaborate ▁nest ▁structure ▁because ▁they ▁overlap . ▁Y el p , ▁YouTube , ▁and ▁Wikipedia ▁are ▁all ▁examples ▁of ▁a ▁virtual ▁community . ▁Comp an ies ▁like ▁Kaiser ▁P erman ente ▁launched ▁virtual ▁communities ▁for ▁members . ▁The ▁community ▁gave ▁members ▁the ▁ability ▁to ▁control ▁their ▁health ▁care ▁dec isions ▁and ▁improve ▁their ▁overall ▁experience . ▁M embers ▁of ▁a ▁virtual ▁community ▁are ▁able ▁to ▁offer ▁opinions ▁and ▁contribute ▁helpful ▁advice . ▁Again , ▁the ▁difference ▁between ▁virtual ▁communities ▁and ▁social ▁network ▁is