http://www.visualthesaurus.com/ This is a subscription site ($2.95 per month, or $19.95 per year). They have a very short free demo you can run. The instant I saw it I had to play further, so I signed up monthly, and will go to a year if it looks like I'm using it. If I change my mind within 2 weeks, they'll refund my 3 bucks. They also have a desktop version you can buy for $39.95, and due to my sucky satellite connection, if I decide to buy it, that's probably the way I'll go. I don't use a thesaurus much. I use one if I have a word on the tip of my tongue and just can't get there, or if I have a particular word/description/theme that's drilled home and I need a variety of words. e.g. In my current work-in-progress there are lots of variations of spark, sparks, glittering, etc...thesaurus was invaluable in varying this. I hate writing that *sounds* like you used a thesaurus, and I generally find online thesauruses (thesauri? lol) frustrating because they're slow, and I have to sort through to find a noun, say, in the midst of a bunch of adjectives and verbs. They just don't work the way I think. This little gem, though, is different. It allows you to explore how the words relate to each other - it's easy, and fun, and kind of addicting...I haven't figured out if it's really *useful* yet - lol. (I've been using it all morning on a section rewrite I've been doing, and it's helped a lot...but it's easy to get sucked into it and waste time if you're in love with words.) It offers several different ways to explore words, all in a "mind map" format - search for a word and it will build a diagram with a word "constellation" around it...click on a word in the constellation, and it becomes the center word, with a new group of words sprouting off of it. They give you synonyms, plus similar words (and use each in an example sentence); "see also" links, a bunch of other stuff. You can add limits so that, for example, it only brings up nouns or adjectives or whatever, which is really useful for those words that are used in all different parts of speech. It's really hard to explain this little program...you sort of have to see it. You can get to the very short demo with the link above, plus they have links to a couple of videos in the middle of this page: http://www.visualthesaurus.com/howitworks/ Just thought I'd pass that along.