I've been playing with webceo's keyword tool and found a large difference in results depending on plurals of search phrases. Does someone know if the difference would really be that large? ("online art gallery" and "online art galleries") or if it's just webceo's stats source that's a bit skew...
Have you cheked DP KWST ? http://www.digitalpoint.com/tools/suggestion/?keywords=online+art+galleries&country=us Looks like webceo is exaggerating. Regards, Tuning