Make 'loading...' not overlap with previous text
Show lastUpdated when hovering on post links
Highlight accesskey only when useful
Refactor
Use type='search' for filter boxes
Remove closing tags of <input>
Improve markup
Filter as you type
Use incremental search boxes
Filter by oldest instead of latest posting date
Initialize filters unspecified in hash
Add clue permalinks
Omit 's' when number of clues is 1
Split stylesheet to separate file
Add suggestions for by and since filters
"By" filter requires any, not all authors to match