FamilySearch.org is probably my favorite go-to site for genealogical research on the web; not only do they have tons of records that you can't find anywhere else, but they also often provide images of the original documents as opposed to just electronic transcriptions of them.
Original documents or images of them are preferable to transcriptions for a couple of reasons:
Firstly, they are more reliable. Records that have been electronically transcribed were done so by human beings, for whom English is not a first language in some cases (Ancestry.com has much of their transcription work done in China).
Example of an error that can occur in transcription: a transcribed census record from Ancestry.com lists one of my ancestors as being 70 years old, but when an image of the actual census was pulled up and examined, his age was found to be listed as 30, not 70.
Secondly, transcriptions often leave out information contained in the original documents.
I had a transcribed death record for my 3rd great-grandfather William Winslow, but checked back yesterday to find that FamilySearch.org now has the original record available. I clicked on it, and was able to see the cause of William Winslow's death, which was... ahem... "intemperance and exposure."
So I now know that Great-great-great grandfather William was probably staggering home after a few too many at a local pub or something when he passed out in the freezing February snow and never awoke.
Not a terribly flattering vignette of my ancestor, perhaps, but it's one that I wouldn't have if I relied on a transcription instead of the actual document.
Karen K | 
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