As a technical writer, I thought this would be an ideal tool to use before I publish my work; having the grammar, syntax, and quality checked beforehand. My main issue is the processing speed to review a single, six-sentence paragraph, about 250 words total. Took a long while! I can't imagine how long a 1000+-word document will take! Not a good first impression, for a 'lifetime' product! I have been a sumo for many years, but I feel this is not a sumo-worthy product, IMHO. Maybe you'll have different experiences?