With all due respect - your service as it exists is completely useless. You either need to be prepared to go to the court to testify for other people or you need to provide reliable, court-tested technical solution for trusted time-stamping.

Basically consider this - if the push comes to shove and someone is getting served C&D letter or worse yet getting sued over their idea, how exactly does your service help them? Or even how would you use in such situation, since you said you built it around your personal need?