Obscurity will NOT HELP YOU avoiding a Google index. They have many sources of data, including receiving toolbar data from users, and they very pointedly do not mention all sources they use to generate the crawl lists.
If you want to not get indexed, use the nonindex meta tag, or sign up for their webmaster console and remove that particular URL from the index. (Somewhat counterintuitively, robots.txt-ing out a site doesn't prevent it from being indexed, only from being crawled. They will still include it in their search results if it has external indicia of trust.)
We have a plan to make money this year. But then again, so did the last start-up I worked at, and it took us a while longer than a year to post revenues of any kind.
For TrailBehind, we think we can start bringing in revenues this summer (or a large enough audience for institutional funding), but our fallback is to seek additional angel funding. And Plan C is to accept some consulting gigs. We're also going to apply to YC, but that's more for the intangibles than the money.
This month, I brought on our first employee (besides the two founders, who are hackers), to execute our sales and marketing plan. We have multiple paths to revenue that he is charged with exploring, along with seeking out additional funding.
Because our website is devoted to the outdoors, the market is cyclical, and I have determined what that cycle is using Google Analytics. So, we have been developing for a few months, and we'll have a major go-to-market push in the late spring as the hiking season revs up. We're also using the next few months to begin laying seeds with potential partners and additional investors.