How to wget something recursively without pulling lots of unnecessary crud
-r means descend recursively
-np means never follow a link upward
-nH means don't put everything in a hostname subdir
wget -nH -r -np http://blah.blah.com/blah
add -N to turn on timestamping, so files already stored locally will not be downloaded again unless changed.
add '-A suffix' to download only files with suffix 'suffix'
wget -nH -r -np -A gif,jpg -N http://blah.blah.com/blah