2) Yknow, believe it or not I didn't actually think too much about this. I guess I assumed the details would be too different for me to borrow much from them. I'll definitely give it a look though.
3) Not a bad idea. I would hope to monetize somehow, but a monthly subscription would have fairly little value if I'm only checking in with them once every few months.
4) I wish! Chances are any accredited investors would already be using AngelList for that, and obviously I can't let unaccredited investors make investments (plus then startups would have to be on board, basically a whole giant mess).
Thanks a lot for your thoughts!
One thing I'm thinking for the whole "returns" mechanism is to have startups return a fixed amount per hour/day/week based on their Mattermark score (basically, how much mindshare momentum they have), similar to how properties in social games give you a certain amount of currency back every [interval].
I could also consider income: most investors have some sort of regular income they use for investments, as opposed to purely bootstrapping off of the first few investments. That could be interesting (perhaps as you level up, by making sound investments, your income rises?).