Look
for a date on the web page for when the information
was updated. This is usually at the bottom of the
page. You need up-to-date information within the context
of your topic. Here are a few examples to help you
decide:
Pluto: On August
24, 2006, scientists voted to redefine the word
"planet" so that Pluto no longer qualified
as a true planet. If a web site about Pluto has
not been updated since then, the information will
not be accurate.
Abraham Lincoln: Even
though historians are still learning details of
his life, web sites that have not been updated in
several years will probably have accurate information.
Medicine or Science: There
are new discoveries in these fields all the time,
so the more recently the web site was updated, the
better.