Here then are my Pause Points For Diligence in VC Deals -- points in time at which the founders need to consider whether, how and to whom to disclose. I think Mark did a fine job of talking about what to disclose during the initial getting to know phase, though I think it is fine to talk to more VCs and to simply get to know them and update them on your business. I'd set expectations about that being the purpose of a meeting before you arrive at the meeting, but building your network of investor relationships early is a very solid strategy. It also happens to be very rewarding...many venture investors are really charismatic and insightful people -- they have to be, they're in the business of convincing really smart and creative people that the same amount of money from one investor is more valuable than that amount coming from another investor!
I give three pause points in the body of the article covering the time period after things have heated up with investors and before the closing but give 8 pause points at the end of the article from the start of the process (before you meet) to the closing.
Quick note: this isn't legal advice (and it isn't illegal advice) so don't sue me for it!