On par with Stefan's site then

. Websites mean little though, I'm more interested in the actual assets of teams as this determines success or failure.
If they can start to answer 1 or 2 of these questions, then they suggest to me that they have some credibility:
Do they have money? Do they have sponsor connections?
Who is designing their car? Who is building it?
What are their physical assets? Buildings, windtunnels, etc?
How much experience is the team bringing in? Are they hiring from motorsport teams or F1 teams?
These questions can be answered before entry, or at least their plans and intentions. Any other questions like drivers, engines and so on aren't going to be answered till later this year, certainly not now.