8. A computerized method comprising: under control of one or more computer systems configured with executable instructions, receiving a relational tag that links a base item to at least one other item according to a defined relationship, wherein the base item and the at least one other item can be acquired by a user and the defined relationship defines the link between the base item and the at least one other item, the defined relationship including a type selected from a plurality of types comprising: a sameness type of relationship representing that the base item is the same as the at least one other item; an includes type of relationship representing that the base item includes the at least one other item; a causal type of relationship representing that the base item causes the at least one other item; a ranking relationship representing how the base item ranks with respect to the at least one other item within an identified context; a quality type of relationship representing that the base item is better quality the at least one other item; a cost type of relationship representing that the base item is less expensive the at least one other item; a trend type of relationship representing that the base item is more current than the at least one other item; a better than type of relationship representing that the base item is better than the at least one other item; a worse than type of relationship representing that the base item is worse than the at least one other item; a greater than (>) type of relationship representing that the base item is greater than the at least one other item; a less than (<) type of relationship representing that the base item is less than the at least one other item; an approximately equal (≈) type of relationship representing that the base item is approximately equal to the at least one other item; or a user created type of relationship representing that the base item has the user created type of relationship to the at least one other item; and annotating the base item with the relational tag.
8. A computerized method comprising: under control of one or more computer systems configured with executable instructions, receiving a relational tag that links a base item to at least one other item according to a defined relationship, wherein the base item and the at least one other item can be acquired by a user and the defined relationship defines the link between the base item and the at least one other item, the defined relationship including a type selected from a plurality of types comprising: a sameness type of relationship representing that the base item is the same as the at least one other item; an includes type of relationship representing that the base item includes the at least one other item; a causal type of relationship representing that the base item causes the at least one other item; a ranking relationship representing how the base item ranks with respect to the at least one other item within an identified context; a quality type of relationship representing that the base item is better quality the at least one other item; a cost type of relationship representing that the base item is less expensive the at least one other item; a trend type of relationship representing that the base item is more current than the at least one other item; a better than type of relationship representing that the base item is better than the at least one other item; a worse than type of relationship representing that the base item is worse than the at least one other item; a greater than (>) type of relationship representing that the base item is greater than the at least one other item; a less than (<) type of relationship representing that the base item is less than the at least one other item; an approximately equal (≈) type of relationship representing that the base item is approximately equal to the at least one other item; or a user created type of relationship representing that the base item has the user created type of relationship to the at least one other item; and annotating the base item with the relational tag. 22. The computerized method of claim 8 , wherein the annotating is performed via a tagging system.