I really don't think anyone is deleting your posts ... the new Yahoo format is very particular about linking or pasting functions ... I'm not sure what the criteria is because sometimes I am able to paste in small amounts ... like a paragraph ... but, I usually have to begin with original text ... I'm sure it is Yahoo's attempt to eliminate or control Spam ... good luck
Certainly no "one" is deleting posts but the individuals writing the programs do write them in a way to eliminate certain words and of course Any link that is "unapproved". Marissa Mayer is a big fan of barry O and Yahoo is a lot like the government. The government could not prevent bernie madoff from decades of fraudulent behavior. The government continues to spend billions and has failed to begin to slow the drug problem,illegal immigration, medicare fraud, poverty, and the list goes on, and on. Yahoo still has a Spam problem but now has a board format with restrictions that infringe on the average user.