Below are a list of the links from http://data.stackexchange.com that currently have spaces in them:

http://data.stackexchange.com/drupal%20answers/queries
http://data.stackexchange.com/unix%20and%20linuxmeta/queries
http://data.stackexchange.com/database%20administrators/queries
http://data.stackexchange.com/android%20enthusiasts/queries
http://data.stackexchange.com/science%20fiction%20and%20fantasy/queries
http://data.stackexchange.com/it%20security/queries
http://data.stackexchange.com/user%20experience/queries
http://data.stackexchange.com/home%20improvement/queries
http://data.stackexchange.com/role-playing%20games/queries
http://data.stackexchange.com/travel%20answers/queries
http://data.stackexchange.com/christianity%20stack%20exchange/queries

http://data.stackexchange.com/science%20fiction%20and%20fantasymeta/queries
http://data.stackexchange.com/christianity%20meta%20stack%20exchange/queries
http://data.stackexchange.com/electronics%20meta/queries
http://data.stackexchange.com/role-playing%20gamesmeta/queries
http://data.stackexchange.com/android%20enthusiastsmeta/queries
http://data.stackexchange.com/drupal%20answersmeta/queries
http://data.stackexchange.com/user%20experiencemeta/queries
http://data.stackexchange.com/unix%20and%20linuxmeta/queries
http://data.stackexchange.com/wordpress%20meta/queries
http://data.stackexchange.com/travel%20answers%20meta/queries
http://data.stackexchange.com/it%20securitymeta/queries
http://data.stackexchange.com/mathematica%20meta/queries
http://data.stackexchange.com/database%20administratorsmeta/queries
http://data.stackexchange.com/home%20improvementmeta/queries

In order to get these to display unescaped, without an unsightly (i.m.o.) %20 (or similar) in them, it seems the only option is to use the [1] and [1]: structure (Like in http://meta.unix.stackexchange.com/questions/1403/search-comments-from-other-commentors-on-question-answers-you-authored-or-hav), which I feel creates unnecessary overhead for more people than a change to the URLs that SE control, that could be made:

1. Swapping the spaces out for _'s
2. Using the SE sub-site's sub-domain name instead (i.e., http://data.stackexchange.com/diy/queries) instead
3. Removing the spaces, like http://data.stackexchange.com/theoreticalcomputerscience/queries and all but one :s of the meta http://data.stackexchange.com sections

What does the community think?

Also, some sub thoughts:

1. Perhaps having the metas indented under their respective sites. They might be easier to find, if nothing else.
2. Not sure why http://data.stackexchange.com/mathematica%20meta/queries has a space, while other metas don't
3. Not sure why http://data.stackexchange.com/christianity%20stack%20exchange/queries or http://data.stackexchange.com/christianity%20meta%20stack%20exchange/queries has Stack Exchange suffixed to it