I'm trying to please as many robots (particularly AdSense) as possible by keeping my keywords in check on my website and I've been using keyword density checkers as well, and I'm not sure what the official minimum number of characters that should be used in a word when it is to be checked for keyword density. If I run my website through a keyword density checker with setting 2 characters per word as minimum word length, then I'll get words like st, nd, rd, and th ranking high which on my site is natural because I talk about a date a lot (such as December 3rd). I don't split the st, nd, rd or th from the number in the day.So from search engines perspective, how many characters minimum are required to be together (without space in-between) to qualify it as a word when evaluating it as a keyword in a site when measuring keyword density?
Minimum characters per word when evaluating keyword density
search engines;keywords