I pushed an item in the Spotlight, my credits have been deducted, but it didn't show up on the homepage.

As for the Spotlight, what appears there is simply a matter of your filters. You have to be sure that your filter settings cover your age group and your location in order to see your items in the Spotlight. Please keep in mind that sometimes, when the line is long, it will take a couple of minutes for your items to come up on the homepage.
Additionally you should be aware that no content that is against the Code of Conduct of Netlog will be allowed on Netlog. If you post an abusive blog or picture, most likely, it will be removed before reaching our homepage.