1. A method comprising: receiving a post from a user; determining a user identifier associated with the user, a post identifier associated with the post, and a term identifier associated with a term in the post; selecting a partition of a user-term index that is associated with the user identifier from among a plurality of partitions of the user-term index; and indexing the term of the post and the post identifier into the selected partition of the user-term index based upon the user identifier and term identifier.