With the recently released version 4.1 Gus Mueller has added an option to export documents to his new, free iPhone client (iTunes link) for access to your wikis on the go. Like most iPhone / iPod touch syncing solutions, this works over WiFi on the same network as your Mac. This is in addition to the previously offered WebDAV syncing and iPhone optimized pages.
VoodooPad comes in three versions: a free lite version, a $29.95 regular version, and a $49.95 Pro version that adds a few features, including a built-in webserver; demos are also available. The iPhone / iPod touch client is a free download from iTunes.
[via Infinite Loop]