1. A method of finding and presenting content items based on input received from a user in which the search query used to match content items of potential interest is formed based on matching the input with a catalog of metacontent items and keywords associated with the metacontent items, the method comprising: providing, on a local device, a local collection of content items and associated metacontent, the metacontent associated with each content item describing informational content of the corresponding content item; providing, on a remote server system, a remote catalog of metacontent items and keywords associated with the metacontent items; receiving, on the local device during a range of time of a sequence of ranges of times, input from the user for finding at least one desired content item, wherein the sequence of ranges of times repeats cyclically after all ranges of times in the sequence of ranges of times have lapsed; receiving a plurality of magnitudes of user interaction, wherein each respective magnitude of the plurality of magnitudes corresponds to an amount of user interaction of the user with a respective dataspace of a plurality of dataspaces of the remote catalog during the range of time; identifying, based on the plurality of magnitudes, a dataspace of the plurality of dataspaces that corresponds to the respective magnitude having a greatest magnitude of user interaction of the plurality of magnitudes of user interaction; selecting at least one keyword that has a different word stem than the received input from keywords included within a subset of the remote catalog corresponding to the dataspace, based at least in part on matching the received input from the user with metacontent items that are included within the subset of the remote catalog; adding, on the local device, the at least one keyword to the received input from the user to form a search query; determining, on the local device, a subset of content items of the local collection associated with metacontent that at least partially matches both of the at least one keyword and the received input from the user of the search query; and presenting, on the local device, the subset of content items of the local collection on a display device based at least in part on at least one ranking criterion, wherein the ranking criterion includes learned preferences of the user for content items of the local collection and local attribute values associated with the content items of the local collection, each local attribute value being based on interactions of the user with at least one content item of the local collection corresponding to the local attribute value.