"There has never been a great way to determine the number of networks that are similar to yours. Search would provide hundreds of similar networks, based on the keywords, subdomain and content, but would miss some and mis-attribute others.
"Hi Laura, thanks for answering! But how can i know how many ning networks are on the same subject that mine or similars? googling it is a mess, impossible to find out! And I haven't seen a list on the blog neither...