phranque - 10:25 am on Nov 13, 2007 (gmt 0)

kamikaze, that is actually really interesting information:

Apache (Server) My early attempts to measure the maximum URL length in web browsers bumped into a server URL length limit of approximately 4,000 characters, after which Apache produces a "413 Entity Too Large" error. I used the current up to date Apache build found in Red Hat Enterprise Linux 4. The official Apache documentation only mentions an 8,192-byte limit on an individual field in a request. Microsoft Internet Information (Server) The default limit is 16,384 characters (yes, Microsoft's web server accepts longer URLs than Microsoft's web browser). This is configurable.

but techman was asking about titles, so only have this to offer:
there is no length limit on titles per se.
i believe the practical limit for what is typically displayed on a search engine results page is 60-65 characters.