Note 5 - Property and Equipment - Property and Equipment (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Property, plant and equipment, gross	$ 614,564	$ 612,205
Accumulated depreciation	(574,071)	(552,357)
Property, plant and equipment, net	40,493	59,848
Computer Equipment [Member]
Property, plant and equipment, gross	140,775	139,551
Office Equipment [Member]
Property, plant and equipment, gross	70,814	70,348
Website Development Costs [Member]
Property, plant and equipment, gross	$ 402,975	$ 402,306

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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