Tom Bombadil is undoubtably one of Tolkien's most popular--and fascinating--characters. The author, km-515, seems not to understand this.
(in doing so, I sticked to the leprechaun interpretation of T.B.; not a Dark Lord as the linked article would like to inflate, but not a goody-two-shoes either. Mind you, these leprechauns have as much in common with green-irish-hat figure as elves with Santa Claus elfs)