A hub is what totaltravel will become...DMOZ & Googleshould be sorted, just Yahoo to pay...I recommend for each home page at the least
Rich Get Richer - Why Yahoo, DMOZ, Google and PageRank are Important: "Albert-Lazlo Barabasi's book, Linked, points out that 'power laws mathematically formulate the fact that in most real networks the majority of nodes have only a few links and that these numerous tiny nodes coexist with a few big hubs.'

The Rich Get Richer concept helps explain why Yahoo, DMOZ, and Google are at the center of the web and why Google PageRank plays a large role in determining which web sites become hubs.

Scientists over at Google understand Pareto's Law and they know that 80 percent of links on the web point to only 15 percent of web pages. This 15 percent of web pages are the hubs that guide us to the other 85 percent of the web...
"A Link from DMOZ or the Yahoo directory alone can give a site a PageRank of 4, which is an important number. Only web pages with a PageRank of 4 or higher are displayed in Google's backward links feature. Why? Google probably displays the 15 percent of web pages that are the hubs of the web.