I think you should probably tailor the post a little bit more to the HN community. Right now this is the equivalent of you linking to an angel investor's "contact us" page. Interesting, since you are an angel investor, posting on HN, but otherwise a little bit too generic, since most of them have those types of statements.

I dunno maybe expand on what you are looking for in a founder, or what you are looking for in a company. Also focus more on what you can offer, angel money is the same, a dollar from you is the same as a dollar from the next guy, what differs is the advice and the connections you can give.