V1.1.1 does indeed add the functionality of keyboard up and down arrow keys to Font Mate browsing: Select a sample letter in the grid, move over to the font list on the left side of the Font Mate window and highlight a font, then use the up and down arrow keys to navigate through the font list. The large individual letter sample changes for each font as do the smaller letters in the grid. Hold the arrow keys down to quickly "flip" through the fonts. (On my computer, a DP G5, the fonts do not scroll too quickly to browse.)

Incorporation of on-screen keyboard equivalents for each letter would bump my rating up to five stars.

Font Mate is great freeware; thanks to Tellura Information Services, the developer!