Avoid interfering with the work of other users of the networks. Avoid disrupting network services. The following examples may help users of the networks apply these principles in particular cases. Messages that are likely to result in the loss of recipients' work or systems are prohibited. CREN networks are not to be used for commercial purposes, such as marketing, reselling bandwidth, or business transactions between commercial organizations.
Advertising is forbidden.
Discussion of a product's relative advantages and disadvantages by users of the product is encouraged. Vendors may respond to questions about their products as long as the responses are not in the nature of advertising. CREN networks may be used for the provision of services which support the needs and purposes of the CREN networks, and for which a charge is made, if the network is an optional mechanism for provision of this service for which no additional charge is made, and as long as the use of the service is consistent with the bandwidth of the network and the forwarding hosts. Any communication which violates applicable laws and regulations is not allowed. Final authority for CREN acceptable use policies lies with the CREN Board.