I really don't know how much value the Wharton FB group has in gauging likelihood of admittance from the wait list until at least after the round 2 deposit date. As has been said, one individual has to approve all requests (which likely involves the tedious task of cross-checking a database and actually clicking on approval). The one person tasked with this probably does this periodically when she has spare time and the motivation to do this. In addition, there are likely a significant number of people that don't join at all.
Based on Round 1 FB analysis before the R2 decision date, it appeared that R1 WL admits and R2 admits would spike, which didn't really seem to materialize.
Based on Wharton's historical use of the wait list, I think the best we can hope for is 25-50 spots to open up (similar to Harvard), but in reality the number may be much lower.
The good news is the R3 decision date is relatively soon, just over 5 weeks away. We also benefit from the fact that Wharton's R3 deadline was before many R2 decision dates. R3 GC application submissions were only a handful. The bad news is that at least looking at last year, there was very little R3 movement.