yeah i have bitcoin because bitcoin is very useful nowadays.

i also noticed that Yahoo do not give opportunity to some member, the reason it just the member are inactive for few days its our personal matter  and i check the rejected member account the post quality is not bad , if enrolled member is inactive or these member post quality bad in campaign then you should kick out it from your campaign. Proverb   ( Cut your coat according to your cloth ).

yes bitcoin is proof currency in the future because bitcoin get high value then other currency .