Leanstack.io was extremely useful for discovering services. Needed best A/B testing tools? I used to go to Leanstack. I don't seem to find any reason to visit Stackshare. I don't really care whether Twitter uses Zendesk or Freshdesk.
EDIT: Just noticed you're behind Virtkick. Funny enough we just listed you last night: http://stackshare.io/virtkick
It doesn't change the main concern, though. leanstack.io was the greatest site to find services.