how information systems help businesses use network$-$based strategies to achieve competitive advantage Internet sites, eBay $($the giant online auction site$)$ and iVillage $($an online community for women$)$can be used by firms to build communities of users$-$like $-$minded customers who want to share their experiences $.$ This builds customer loyalty and enjoyment, and builds unique ties to customers how information systems help businesses use core competencies to achieve competitive advantage This is an example of how information systems help businesses use synergies to achieve competitive advantage how information systems help businesses use human$-$focused strategies to achieve competitive advantage DON'T KNOW YET