Bitly links on Yhaoo answers doesn't shown

Hi
I have a Yahoo answers level 3 accountץ
at first I was posting answers with bitly links and it was all good.
Now, after a while and many answers with bitly, I can't see the links -
I can see only when I logged in.
Now, I tried to shorten with tinyurl and now the links are do shown.

FYI I didn't used proxy or something when posted the answers...maybe it related.

somebody know this situation?

That's called ghosting. Try with other shortners