I stopped maintaining RTPLunch.com once Urbanspoon started doing a better job than I could. Because this site is theoretically community-maintained, if anyone wants to take over keeping it updated, it's pretty trivial. Just visit the rtplunch group at flickr.

Otherwise, here's a taste of why I switched to Urbanspoon.
RTPLunch.com is a flickr/googlemaps mashup with the specific goal of making it easier to decide where to go to lunch. Click keywords at the bottom to filter the list of restaurants. Click restaurant names to view them on the map, get more info, link to their websites, and get directions. If you'd like to contribute to the project or just learn more, visit the rtplunch group at flickr. You can also download the source for this page.(click to close)
To begin, click one or more keywords in the list below, and a list of restaurants matching those keywords will appear here. For more info on how to filter, click "how to filter" below.

how to filter

Click a keyword to add it to the filter box. By default, keywords in the box are OR filters: "chinese mexican" would get you all restaurants with either "chinese" or "mexican" in their keyword lists.

Click once on a filter already in the box to put a "+" in front of it. This turns it into an AND filter: "+chinese +mexican" would get you any restaurants with both "chinese" and "mexican" in their keyword lists.

Click twice on a filter in the box to put a "-" in front of it. This turns it into a NOT filter: "-chinese" would get you all restaurants that do not have "chinese" in their keyword lists.

Click again on the keyword in the keyword list to remove it from the filter box. You can have a total of five filters active at once.

When different filters are combined, the NOT filters are applied first, then the AND filters, and last the OR filters: "chinese mexican +latelunch -tableservice" would get you restaurants which do NOT have table service, which are open after 2:00 p.m., and which serve either chinese or mexican food.