Good luck. I think that your emphasizing that it is manually submitted is important, and makes me expect that it'd be done with a higher level of quality than by an automated tool.
It has crossed my mind to automate a service like this, and then remembered back when there were competing search engines and directories. There were many automated, pay-for services that'd submit your site to them all at once, which of course never worked as well as doing it by hand.
Good luck. I think that your emphasizing that it is manually submitted is important, and makes me expect that it'd be done with a higher level of quality than by an automated tool.
It has crossed my mind to automate a service like this, and then remembered back when there were competing search engines and directories. There were many automated, pay-for services that'd submit your site to them all at once, which of course never worked as well as doing it by hand.