Of course, I mean.. What if I change the script to search for the first video thumbnail and display a default image if there isnt't any?

Could I use something like this?

Sorry, I don't see where I can edit the tags. Is it on the topic itself or on the admin side? Also, when importing from Simple:Press I don't see any...

Now I see it's not only the avatars... It's the member pages, even the posts. Should I replace it in the database or is there an easier solution?