Are the full results from the WLN competition going to be posted? If so, when?
There is a ‘preview signature’ button in the User CP, and your signature is automatically updated on all your posts, so you can simply look at an old one to see if it has updated.
As well as after you find that the signature is not working you can delete your own post. Unfortunately now its to late… but next time do that… or just preview it.