I put all of my brushes in folders. I label the folders with the name of the person who made the brushes. I also have some in catatories: Angels, Grunge, Text,. etc. I would import your brushes and put them in folders as you download them. If you do a whole bunch and then try to take care of them, the task becomes daunting. I don't know what kind of program you use. I use PSP9 they come up in the presets in the folders. The are easy to find.
Good luck,
LindaU