This is for all of you plugin developers out there who might be using the Custom Meta Data option in 1.2 to store data for your plugins.
I would like to propose that we voluntarily use prefixes on our data tags so that we can keep our plugins running in their own name spaces and not have conflicts. I plan on prefixing all of my plugin custom meta data with the unt_MetaDataKey so that there shouldn't be a big risk of anyone else having a meta key with the same name.
I think a 3 letter combination whould be enough. Use your initials or something. I will add a wiki page suggesting the same thing as well.