Is your nanny who you think she is? I mean, probably. But according to the New York Daily News, Park Slope Parents [http://www.parkslopeparents.com/] has noticed a rash of “fraudulent” posts [http://www.nydailynews.com/new-york/brooklyn/deceit-nannyland-fake-profiles-posts-fill-site-parents-article-1.1155752] from job-hunting baby-sitter — nannies posing as their employers online,