Some will index you, some will not, some will accidentally drop you from their database to make room for new ones, some do not work properly during a search, etc. You must be aware that this is an evolving technology on the Internet and how we would like it to work, and the reality of how it does work, are two different things. Suffice to say, Ad Wizards attempts to do as many of the right things as possible for the search engines and getting our clients indexed, and overall we get pretty good results over a period of time. You will rarely get indexed by all of the search engines so keep this in mind. This helps get you back into a database when you consider that you may have been dropped by an engine for reasons unknown.
Submissions are an ongoing process.