one of the downsides of homeschooling can be limitted opportunities to share successes but kids can post work on this space site.
http://www.windows.ucar.edu/tour/link=/windows3.html
and this is a good site for sharing work too:
http://www.kidlink.org/english/general/index.html
literature guide
http://www.sdcoe.k12.ca.us/score/cy45.html
webquests are fun and the child gets to present the research to the kind of problems faced in life.
http://guhsd.k12.az.us/~jdbeveri/plntsrch/
making searches easy
http://www.worldsofsearching.org/