Hi everybody, Topicmarks is indeed slower in processing but that's because it does far deeper semantic processing behind the screens than our peers tldr.it, goodsummary.com, summarity.com and others.
We think this results in a much more relevant summary - but we'd love to hear about how our peers compare to us for your particular summarization needs.
Also, we're starting to open up our API for select developers if you're interested in integrating summarization, fact extraction etc into your own application. Tweet @topicmarks if you want to be involved.
in short, you upload a text and it extracts: facts, summary, keywords, index and stuff, with the most important info.
in most of the cases pretty cool, but sometimes was slow in processing.