Basically the ultimate goal is to search my old posts for something rather obscure (it was something like '1 + 2 + 3') If I had a giant webpage it would be very easy to do a quick search. Indeed I have done that by downloading my personal facebook archive. Unfortunately, facebook changes so quickly that information on their pages, and esp stackexchange is outdated.
What I have tried:
1) Facebook archive of data:
No longer does this include wall posts. Nor does the 'enhanced archive' download either.
2) Firefox FBarchive plugin
As far as I can tell both Firefox and Facebook have changed so much that this plugin no longer works. I don't even get the option to 'capture'.
3) Searching facebook directly:
I could go to my 'activity log' to see all my posts, but these are fetched dynamically (by ajax?) and since I don't see all the posts, I can't do a browser text search. You might think that the 'search' bar actually searches your posts, but I see no way to do this. There is a Graph Search option, but this is in beta.
4) Third party app:
Id rather not trust my data to a 3rd party webapp if possible, but as far as I know there aren't even any great webapps that grab all your content either. Though the API, as far as I can tell, does support it.
5) Start scrollin'
As far as I know the only way is to scroll all the way to the bottom of your first post to make all the calls necessary to the server to load all the content. That really isn't a viable solution for me.