1. A method of suggesting keywords for a litigation hold, comprising: receiving a seed set of keywords; identifying, by one or more processing devices, a set of documents corresponding to the seed set of keywords; receiving an indication of relevance for one or more documents in the set of documents; generating, by one or more processing devices, a suggested set of keywords, wherein each keyword in the suggested set of keywords is determined to be discriminatory based on the indications of relevance, wherein each keyword in the suggested set of keywords is external to the seed set of keywords, and wherein the set of documents corresponds to the seed set of keywords and the suggested set of keywords; and providing the suggested set of keywords to a client.