Per that rule: Not really. They are similar to signature campaign applications. Should they be disallowed? Absolutely. Services, can and should move the registrations off of the forum to avoid unnecessary spam.
You aren't seeing what I'm actually talking about.
These are not applications. These are report updates. Meaning, they are posted every week to bump the thread and share links to their participation in the campaign.
This is not something done once by one person. This is done by every Facebook/Twitter campaign participant every week to keep the thread alive. If that's not incentivization to post in the thread then I don't know what is.
EDIT: here's the bounty thread's details
Post reports with links to Facebook activity in this thread every week.
Post reports with links to Twitter activity in this thread every week.