@khaleelkazi talked about Project Blank over time - often when being grilled about its progress -, and lately he has talked about Threads.
He describes Threads as a step on the roadmap to Project Blank.
On this roadmap, we are working on a Threads feature on LeoFinance that will ideally give users a glimpse into how Project Blank will be - as ProjectBlank will be the more open and scalable version of Leo Threads. We are doing this to test the functionality of all the backend architecture we've been building for the past 18 months to build ProjectBlank.
What I'd like to do is create a bullet point comparison between Threads and Project Blank, as far as I understand them, from my position as a regular user of Leofinance, but without any access to privileged information. So treat this comparison with indulgence, as it's hard to compare two things you haven't seen or used before, or when you haven't been involved in their development.
Before we start, in his short description, Khal mentions Threads will pull comments from Leofinance and show them as top-level posts, with their replies, much like Twitter does it.
What wasn't very clear to me, from the limited information shared so far, is what/how comments will be pulled? Based on what criteria?
manually picked by the curation team
based on the level of interaction
based on LEO rewards
from all Leofinance content or from certain pre-selected accounts (like @leomarkettalk, @leofinance, etc.)
But I think I figured that out.
My guess is, based on the fact Khal mentioned Leo communities were needed for Threads, that the comment threads will be hand-picked by curators of the Threads 'community', and they can add any thread from Leofinance there.
Comparison Between Threads and Project Blank
Threads
will work on Leofinance desktop app
will use the existing structure of comments/replies on Hive
can be rewarded in HIVE/LEO and potentially other HE tokens, depending on the tags included in the top-level post
no limit on the length of the comments other than the limits imposed on Hive, mainly by the size of the block
can be upvoted and downvoted, like any other post or comment on Hive
the number of comments probably hand-picked every day for the Threads will be limited
it will test the infrastructure for Project Blank at a higher scale than a small testing team, to see what breaks and what needs to be scaled up
Project Blank
will work as a mobile app initially
will make onboarding very easy
will NOT use the existing structure of posts/comments/replies on Hive
will use custom JSONs to keep the interaction on-chain
will NOT receive HIVE/LEO or other existing HE token rewards
@leomarkettalk, 
@leofinance, etc.)