My best guess was it was deleted because it began with asking a question for clarification (which should usually be a comment instead), and it was very short. I see you edited it to remove the initial question, although the answer is still very short.
Personally, I would vote to undelete it if I could. If you've encountered the same problem in the past, chances are your solution will fix the problem, and as someone posting the question, I would much rather have one possible answer instead of none.
My best advice would be to try and make the answer a bit longer by clarifying that you've encountered this problem in the past, as that will back up your claim that the install will fix the problem, and if possible provide a link to the library you mention. Something like:
I've encountered this issue in the past and have solved it by
libwebkitgtk-1.0-0. I am using linux / ubuntu, and it appears this library is missing by default.
Edit: Nevermind, I see you already did a much better edit than that which actually explains the problem in more detail :)