Abstract: Accounts are grouped in a database via replaceable connections and non-replaceable connections to form account groups that can be used to efficiently track the propagation of resources or privileges among users. Accounts that can be treated as a same account are linked or grouped via replaceable connections. Accounts having different ownerships are grouped via non-replaceable connections. The account groups created via the replaceable connections and non-replaceable connections can be used to track offer sharing and/or distribution from primary accounts to secondary accounts in respective account groups. For example, users of an offer propagation platform may split an offer into sub-offers and share sub-offers with others. Using replaceable and non-replaceable account groups the system can operate with the capability of supporting linked accounts in millions, allowing the offers to be propagated among users via sharing, redistribution and/or subdivision for improved usage.