Search parameters:

Page to search:

this page
all of this users pages
entire system

Select:

this user
or enter user
and page (if needed)

Search key:
text

Search on:
user (poster)
tag (keyword)
words in title
words in source
specific url
words in author
words in brief comment

Timeframe:

very recent (within the last 1000 posts)
recent (within the last 10,000 posts)
history