We do our best, but considering that there's more than 2k pages of text created for the game in a year, some mistakes are bound to slip through. I fix them when I see them, but if you see something particularly egregious let me know about it!
In that case, do you want me using the comments here or something else to send the typos and stuff? I could get this very cluttered very fast because, while I get what you mean about egregious issues, I would be more likely to submit a whole string of dialogue boxes if they all have issues rather than just the worse in the string. Also, do you want me to revise it and submit both the original and revised so you can copy it and find it and have a version that is revised ready to replace it or do you want to just fix it yourself? I do work a lot with other RPG Maker users is why I am asking that as some of them do have documents that have there WIP scripts and they update that first followed by the game.
Probably be easiest just to e-mail me at haremrpg@gmail.com with any corrections, although make sure to download the newest version to make sure that they haven't already been corrected. I do use a SVN for development where everything goes through docs and gets proofed before going into the game, but RPG Maker doesn't lend itself to that type of development easily so I'm very hesitant to give anyone access to the source code.
Send me a few of your suggested corrections through e-mail and we'll see what we can do to get those fixed.