We have just launched http://www.travelspyder.com/ It is a vertical web search engine for the Travel sector. In order to index and show search results with a minimum of SPAM, scrapers, MFA's and "me too" affiliates, we crawl from a list of URLs. The spider does not follow outbound links. Yes, we actually crawl the web. We don't take results from other SE's. We are currently crawling about 2200 sites and should index 5+ million pages on the current crawl. Our short term goal is to have 25 million quality pages in the index. So basically, we need help in qualifying the sites. We also need help adding quality travel related URL's that meet the criteria set out on the "Volunteer" page. If you are interested in helping, please send me a PM. We will ask you to do 25, 50, or 100 URLs at a time and return an email.