pageoneresults - 8:21 pm on Feb 19, 2004 (gmt 0)

For Google it is best to keep it down to 64.

Can you show me where you found that statistic?

As far as using questions in titles, go for it. If the content is a Q & A type situation, then having those questions in the title will be of great benefit to your users. You may also find that your AJ (Ask Jeeves) traffic will increase if the content is of the type that users would look for at AJ.

You'll also capture those exact phrase searches. Google states that it ignores certain words in searches such as how, to, from, the, etc... But, I've seen different results returned with and without the ignored words.