This is a list of software, services, and information I often use or refer others to. Some of the links have discount codes where I know them. The discounts may be expired by the time you see this but if an item is on the list it is something I at least suggest considering regardless of price.
Storage/Backup
reliable local storage: Drobo
online backup carbonite.com offer code twig
online file sharing/syncing: dropbox.com (has applications for Mac, Windows, iPhone, Android)
The Ultimate Dropbox Toolkit & Guide
Websites
website creation/hosting: squarespace.com/twit
rails hosting: heroku.com; engineyard.com
Mac OSX superuser tips and tricks for Terminal
Screen Sharing
gotomypc.com
gotomeeting.com
gotoassist.com
gototraining.com
Web Tools
instapaper.com (web, iPhone...)
simplenoteapp.com (web, iPhone...)
iPad (some I use, some are recommended by others)
elements - $4.99 - Dropbox Powered Text editor
InstaPaper - $4.99 - very popular way for deferred viewing of web pages
Evernote - free - popular way to save stuff forever
Software
mac/win(beta)/ipad/iphone password manager: 1password.com
all platform password manager: lastpass.com
pazera software - YouTube download, video conversion for Windows: http://www.pazera-software.com/
Downloader+ 1.8 for Mac - untested by me
photo sharpening plugin: http://www.topazlabs.com/infocus/
Cables
if you have time to buy online: http://www.monoprice.com
Best Practices
keynote on iPad: http://support.apple.com/kb/HT4114
Things I will use
These are some items I'll want to find again:
very cool diff application for Macintosh: http://www.kaleidoscopeapp.com/
cool way to make a drive from home accessible everywhere: http://www.pogoplug.com
Things I may need to help others to find:
http://windowslive.com/desktop/moviemaker
http://explore.live.com/windows-live-movie-maker
http://www.quirky.com - invention site
http://www.yurbuds.com/ - attachments for iPod earbuds that make them more comfortable; suggested by Peter Krasa