When time passes from offering registration, Clients will more likely to consider that this offering is irrelevant. Agent will need to notify Clients from time to time that his offer is still relevant by popping up it. When Agent pop-ups his offering, deposit will be locked once more for the pop-up period. Long running offerings can be rated by comparing number of cooperative channel closes with uncooperative. If Client creates state channel, but does not receive service he will be forced to make uncooperative channel close. In that case, blockchain event will be emitted where Agent address is listed. If Client will see that there is too many uncooperative closes compared to cooperative once, he might not create new state channel with this agent. This will require malicious Agent to create new Agent address, transfer tokens and register new service offering. Such operation is expensive and not effective.