Tansey, Thanks for the feedback. I will clarify that these are US equities. The target market for now is somewhere around casual investors who invest themsel

Tansey, Thanks for the feedback. I will clarify that these are US equities. The target market for now is somewhere around casual investors who invest themselves in the market generally, but less than professional customers that require exchange specificity. I think the notion of complex filters is a good idea, but I am unlikely to get to it -- Including complex algo trading (or notifications based on those signals) becomes a monster project very quickly and suddenly trying to compete in the space of real Goliaths. You hit the nail on the head though about "only sending updates". That's sort of exactly the service I needed a few months ago and couldn't find one I liked. Of course executions can be done with just stops and limits, but there have been times I've been filled after a news event and wished I had been there to insert the human decision making process between signal and trade.