The preferred form of communication also depends on the project. Do they have an issue tracker? If so you could probably file one along the lines of "Page X could use some improvement" and ask whether they're interested and how it's done.
Some projects use mailing lists, forums or even irc.
Open, group-based forms of communication are usually preferred because it allows anyone qualified to respond instead of pinning it on a particular person.
Some projects use mailing lists, forums or even irc.
Open, group-based forms of communication are usually preferred because it allows anyone qualified to respond instead of pinning it on a particular person.