Some of the suggested names are great and could be successful (they should be tested on non-LW readers), but sometimes they sound too generic.
Exactly - I just assumed Luke at al would do market research, but please remember that this site is not necessarily representative of who you want the title to influence (LWers will probably be buying the book, but I doubt many will do so on the basis of the title.)
Quantum Computing Since Democritus got me thinking that we may want a more riveting title for The Sequences, 2006-2009 ebook we're preparing for release (like the FtIE ebook). Maybe it could be something like [Really Catchy Title]: The Less Wrong Sequences, 2006-2009.
The reason for "2006–2009" is that Highly Advanced Epistemology 101 for Beginners will be its own ebook, and future Yudkowskian LW sequences (if there are any) won't be included either.
Example options: