I think the Yutani Corp part of this is pure fan-viral-stuff. There's way to much going on in Prometheus storywise as it is, for them to include a Weyland vs Yutani angle and having to spend screen time explaining to the audience what's what and who's who. We the fans know the basics of course, but a large chunk of the audience will have no clue who Yutani Corp is (or Weyland Corp for that matter). Just my $0.02, you know...
The most interesting thing for me, is speculating whether the basic mission statement of Prometheus Project originated from Shaw or whether it originated from Weyland. Here it really sounds like Shaws thing with her trying to pursuade Weyland to fund her. If so, that could put an entirely different spin on what possible role Weyland will play in the film and why he's onboard the ship...