Temporary table performance?

Hello everyone,

In the Intranet application I've been building over the past 9 months, I have
developed quite a beast of a search. I've asked for help here in the past on
performance tuning it, and have come to the conclusion that I've gotten it as
tweaked as I can without seeking the counsel of a shamen.

What I'm looking at doing is improving in-page performance. In a nutshell, how
expensive is it to create a temporary table? I'd like to do something like:

CREATE TEMP TABLE SearchResults AS [......];

I could then do some queries against the temporary table without having to
regenerate the results every time I want to show a "Page 299 of 500" toolbar.

Would I be better off just sucking this data into an in-memory data structure,
or can I use a temp table as an easy-to-use alternative?

--
/* Michael A. Nachbaur <mike(at)nachbaur(dot)com>
* http://nachbaur.com/pgpkey.asc
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...[Arthur] leapt to his feet like an author hearing the phone ring...