Although certainly not to the level of Google Gears promise I have some of that already. I use Gmail and IMAP with the N810 mail package which allows me to create off line emails. I also use Gcalendar and run mCalendar on the N810 which provides calendar sync with off line mCalendar entry or with calendar items entered on the Web. And to a lesser extent I downloaded my Blogger.com into a file which the RSS reader on the N810 read when I clicked that file.