Freedomschoice can certainly respond with his own remarks, but I'll throw in some general comments as they relate to the CPMWiki as a whole.
Generally speaking, the raw grades on the registers are taken at face value from the person submitting the note. If there is any significant discrepancy between that grade and (for example) the grade observed in-person by the Wiki Contributor, then no grade may be posted, or an adjusted grade may be posted. Such was the case with one particular note that someone showed me at a coin show back in the fall. It was a nice note, and the gentleman who showed it to me suggested it was Gem UNC. He asked me to have a look, so I did. After noticing various defects, I concluded that it would be at most UNC, and that I could not list it on the registers as Gem.
The bottom line here is that readers should take raw grades at face value. They are, for the most part, personal opinions of the owners of the notes. Some people are more accurate graders than others. There's really no good way of raising the bar without the end result being that we're discouraging submissions.
As for what is required, the more information, the better. We always encourage scans of both sides wherever possible, but this is not required, as many people do not have scanners, digital cameras, or even access to a photocopier and the postal system. Our primary goal is to collect information by whatever means possible, and we don't want to get into hindering that goal by having a very high bar for making submissions.
Logged
BWJM, F.O.N.A.
Life Member of CPMS, RCNA, ONA, ANA, IBNS, WCS.
President, IBNS Ontario Chapter.
Treasurer, Waterloo Coin Society.
Show Chair, Cambridge Coin Show.
Fellow of the Ontario Numismatic Association.