Why haven’t I thought of that?
iCal can publish through FTP after all:Well color us surprised: Mac OS X Hints just found out that iCal actually can publish calendars through FTP (not just WebDAV), opening the doors for many users to publish their calendars and integrate them into services like Google Calendar and the like. One simply needs to use ftp:// when using the Publish… command, and all should be well.
While it should be noted this still doesn’t enable full sharing and editing of calendars like SyncBridge, it should allow users with non-WebDAV enabled hosts to get their iCal publishing on.
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from TUAW