Idea for network promotion and SEO link building

When I left my previous employment i kept most of the software i had built up and im wondering if members could benefit from a search engine submission service to assist in SEO' network admin launch campaign's?

I have all the software setup and it would be simple process to add more website then email a report when completed when doing my own websites !

I wonder if it would be worth a small donation from network admin's i.e $5 dollars per submission or $10 for 4 submissions a year as a Donation to our charity?

I can run a test submission to allow wpmu dev to test and verify the work is completed and im sure it would make a great start for new networks

feedback would be gratefully appreciated