The filter. The value unit is delivered to selected consumers based on filters. A filter is an algorithmic, software-based tool used by the platform to enable the exchange of appropriate value units between users. A well-designed filter ensures that platform users receive only value units that are relevant and valuable to them; a poorly-designed filter (or no filter at all) means users may be flooded with units they find irrelevant and valueless, which may drive them to abandon the platform.