After I reached around 7-8k bookmarks the only thing that worked for me is an orgmode text file in a git repo, but it's true that I don't need fancy syncing or sharing/social features.
The industry is really small, more so in other parts of the world such as Buenos Aires. The 'scene', people who actually leave their keyboards or don't engage outside of 9-to-5 is even smaller.
Many things were learned. More research was probably warranted. Also, it's not the same to organize a conference for an existing community organized around some technology, e.g. Ruby, Python, NodeJS, etc and organizing an event that tries to span industry topics, it's much harder to know everyone or get references.
Exactly this, you want to make the right choice and not be judgemental or act out of fear, but once the other party becomes needlessly belligerent one knows what to do.