CC+ is basically a Creative Commons way of saying "if you want extra permission beyond those granted in this license, contact me [or some third party] to arrange that". It is mostly talked about in the context of using a NC license and then using CC+ for anyone who wants to get permission for commercial use.
http://wiki.creativecommons.org/CCPlus
However it also seems to make sense even for Commons which only allows CC-BY and CC-BY-SA. A lot of people have personal "contact me for X" statements where X could be a freer license, higher-res image, whatever else.
We could start using CC+ as the framework for that today, as seen by the simplest example http://wiki.creativecommons.org/CCPlus#Easy_CC.2B_Markups (the main gist of it seems to be special attributes in the <a> html tag)
So the question is not should we allow it (we have no reason not to), but - should we actively encourage people to use it, instead of personal "contact me for X" statements?
Basically the only point of using CC+ instead of personal statements is because CC+ is intended to be a standard. This is not an issue where the benefits of standardisation are hugely obvious to me, so I am not too fussed about this, but maybe some people have strong feelings about it.
If you use a personal contact statement, is there any reason you wouldn't switch to a standardised CC+ statement with an equivalent statement?
cheers, Brianna user:pfctdayelise