Popular proxies are ones that are visited most often, the favorites. If you submitted a proxy and it's not listed here, it just means other proxies are getting more hits than yours, it's nothing personal.

If you want to increase your exposure then you may want to consider a premium (paid) listing, they're the ones that usually get to the top here. If you have something to offer in place of payment then use the Contact page to make me an offer, signature links on a popular forum or a link on any high traffic site, blogs included, for example. Any (and all) reasonable offers will be considered.