Grave stone

I've seen that some have the year of death as 1728 and others show 1729. I looked online and found a picture of the grave stone showing 1729.

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=21507

http://www.findagrave.com/cgi-bin/fg.cgi?page=pv&GRid=21507&amp...

The grave stone is a good source, but I'm also seeing Wikipedia cited as a source. Most genealogists agree that Wikipedia isn't a good source because anybody can post anything, right or wrong. But Wikipedia or any encyclopedia can be used as a reference to trace sources. If that source is found and verified, that ORIGINAL source should be cited, not Wikipedia.

Citing Wikipedia, which is at least somewhat traceable to authors, is still better than citing "the Internet", without further details. I've seen that, too, on Geni.... literally; I'm not kidding.

I have also found examples of Find-A-Grave having pictures of the wrong gravestone, so take care!

Another bad source I've seen cited is the genealogy website of the Church of Latter Day Saints. Anybody can post anything, and I've found many errors.