Welcome

Ah yeah I see the "placeholder for interactions with being asked to be a friend blah blah" stuff. I found the traits xhtml file; do most traits need a text? Or only more major traits like personality traits (ex. mind fucked, tsundere, tomboy, mature, etc.).
A very similar question has been answered here:
http://www.pinkpetal.org/index.php?topic=1291.msg25247#msg25247Traits are not very important in texts but it often makes sense to use
some in forks.
Also, lol, sorry to bombard you with all these questions, but I just want to make sure I don't mess anything up.
It teach a man to fish/give man a fish kind of scenario so bombard away

Okay, I had a feeling it had to do with that tortoise thing and the repository lol. Though, yeah, maybe I should just upload it and have someone else push it since I dunno how to push.
I strongly suggest to learn how because the only way to push your changes from my PC if I edited the same file myself that I know off is to fork the project or create another repository. It's messy and takes too long + mercurial and HG are considered very user-friendly.
You basically:
- Commit (add all your changes to local repository)
- Pull (get all incoming changes)
- Merge (and at rare occasionally might have to resolve some conflicts with some decent tools)
- Commit again (usually offered as a part of the merge above)
- Push (deposit changes to the remove repository)
We all maintain local copies of the code, history of development is maintained at every node (PC/server/laptop) locally so there is no chance in hell you can completely break something for everyone even if you try

Make an account at SourceForge and PM me/Dark or CW your login there. There are dozens of really good and short tutorials in written format or on YouTube if you need help with something or you can ask here (but our knowledge of mercurial is at userlevel I am afraid).
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As for writing, fixing typos is a good start, you can add some choices to texts or work on placeholders next. As you gain experience, you can try to create some events, add to existing once, add more interactions with NPCs or add more options to girlsmeets or interactions. If you need Python code, just put in the text and leave me notes as comments or post what is required here.
Ren'Py makes writing really easy and convenient compared to games like WhoreMaster, SlaveMaker, OtherWorld and etc.
Main idea behind the game design is creating Features and Graphics representations of cold ingame logic, something that most indie games choose to ignore or don't even try. Ren'Py is very moddable and allows to do almost anything save the 3D graphics (and simple 3D graphics as well in an year or two). It is already possible to add 3D dungeons like in oldstyle Quake or Doom now but we don't have a graphics designer on the team and there are plenty of other interesting stuff planned/discussed already.
Basically as you get more and more familiar with game layout, Ren'Py script and some basic Python, you option in writing will grow exponentially, me putting your ideas in code might be really useful for learning as well.
For now we're planning to finish some basic form of girlsmeets, interactions, wrap up some loose ends and release an Alpha version to see what parts of the game people like...