Already there are two tags for this ("Modeling" and "Modelling"). Should we, very early on, decide on one tag and try to edit posts in order to keep consistency and better searching?
We can alway merge tags down the road when one becomes dominant. That's possible for the administrators to do. I think trying to moderate every tag at the beginning is probably not going to work effectively.
Just read the section in here on this subject: http://blog.stackoverflow.com/2010/07/the-7-essential-meta-questions-of-every-beta/. In that case, I vote for "Modeling". Let's try to keep it clean on that.
What does this tag even signify? On our site, it seems so general as to be almost meaningless. A huge percentage of questions could be tagged with that.