A complex "type" of music, ranging from the hidden complexities of the supposedly simple Delta style, to the hard charging, often horn enhanced Chicago variety, with about twenty variants ranging up and down the Mississipi valley and into Texas. Add to that the influence of British musicians who discovered it, adapted it, and brought it back to influence traditional bluesmen and you have what I believe to be the most vibrant and growing style of music in North America.
Of course there are some god-awful charlatans masquerading as bluesmen. Why wouldn't there be. But fortunately they are easy to spot, and there are so many fine musicians active today that its easy to find pleasure here.