best strategy for searching large text fields

<div class="WordSection1"><p class="MsoNormal">PostgreSQL 9.3.x<p class="MsoNormal">I am looking for really good
documentationon how to do the following.<p class="MsoNormal"> <p class="MsoNormal">Use Case<p class="MsoNormal">I have
aweb application that will be storing into a table large blocks of HTML web content.  Users will then want to search
thesefields for phrases.  What is the best strategy for handling this in PostgreSQL?  <p class="MsoNormal"> <p
class="MsoNormal">Whatwould the SQL look like?  <p class="MsoNormal">What data type should the web content field be in
thetable?  <p class="MsoNormal">Is there a way to set up the SQL so that matches are best match to least accurate
match?<pclass="MsoNormal">Etc…<p class="MsoNormal"> <p class="MsoNormal"> <p class="MsoNormal"> <p
class="MsoNormal"> <pclass="MsoNormal">Thanks,<p class="MsoNormal"> <p class="MsoNormal"><a
href="http://illinois.edu/person/lance">LanceCampbell</a><p class="MsoNormal">Software Architect<p
class="MsoNormal">WebServices at Public Affairs<p class="MsoNormal">217-333-0382 <p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><ahref="http://illinois.edu/"><span
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