[suddenclarity]

Seems reasonable that those types of words are eliminated for the purpose of the tool. Either by having a letter limit or by whitelisting them. Of course there will be duplicates of "the" and "and".

[oneeyedpigeon]

Unfortunately, it's just a letter limit; lower it and the "the"s get highlighted. Support for stop/common words would definitely be a good upgrade.

[notRobot]

They're called "stop words".