3. The method of claim 2 , wherein assigning the score to the particular synonym rule based at least in part on the particular type of skip count for the particular synonym rule comprises assigning the score to the particular synonym rule based on the particular type of skip count for the particular synonym rule, a click count for the particular synonym rule, and a different type of skip count for the particular synonym rule.
3. The method of claim 2 , wherein assigning the score to the particular synonym rule based at least in part on the particular type of skip count for the particular synonym rule comprises assigning the score to the particular synonym rule based on the particular type of skip count for the particular synonym rule, a click count for the particular synonym rule, and a different type of skip count for the particular synonym rule. 8. The method of claim 3 , wherein the score assigned to the particular synonym rule satisfies: W ⁢ ⁢ 1 ⁢ ( particular ⁢ ⁢ type ⁢ ⁢ of ⁢ ⁢ skip ⁢ ⁢ count ) + W ⁢ ⁢ 2 ⁢ ( different ⁢ ⁢ type ⁢ ⁢ of ⁢ ⁢ skip ⁢ ⁢ count ) W ⁢ ⁢ 1 ⁢ ( particular ⁢ ⁢ type ⁢ ⁢ of ⁢ ⁢ skip ⁢ ⁢ count ) + W ⁢ ⁢ 2 ⁢ ( different ⁢ ⁢ type ⁢ ⁢ of ⁢ ⁢ skip ⁢ ⁢ count ) + W ⁢ ⁢ 3 ⁢ ( click ⁢ ⁢ count ) , wherein W1 represents a weight associated with the particular type of skip count for the particular synonym rule, W2 represents a weight associated with the different type of skip count for the particular synonym rule, and W3 represents a weight associated with the click count for the particular synonym rule.