Topicmarks was acquired by Tagged Inc. in December 2011
Description at time of acquisition:
Topicmarks is a web service that creates smart, interactive synopses from electronic documents in minutes. We use the most advanced natural-language processing technology available to understand the true meaning of your text, summarize it for you and retain all its facts forever. Upload multiple texts and Topicmarks becomes your knowledge base: finding links between texts, grouping texts around topics, and containing all the facts from all documents you ever read. Topicmarks helps you create smart, interactive synopses from electronic documents, that contain all original information yet give an immediate overview of the essential contents. This helps you get the gist in minutes without having to read the full text yourself.