Office Productivity Hacks

Web Fax Services

Looks like it does not require account set-up for free fax service. Inserts ad on fax cover page.

Looks like it does not require account set-up for free fax service. Claims that it does not place ad(s) on fax.

Claim's it's "Truly Free Internet Faxing." Also appears to not require account set-up to use.

Alt-Shift-D, Backspace, Ctrl-Shift-F9

Melissa Data Address Check: http://www.melissadata.com/lookups/AddressCheck.asp; Input entire address (minus zip) into text field and Melissa Data will quickly generate a zip+4 code.; Limited to 25 lookups a day to non-registered users, and 100 per day to registered users.
Melissa Data Batch Address Check: http://www.melissadata.com/lookups/batchaddresscheck.asp; Must register to use this tool. Delivers zip+4 and cleaned up addresses in multiple address batches.

Web-Based Slide Decks Done Right: http://luigimontanez.com/2011/web-based-slide-decks-done-right/
SlideGo - Interactive Slides: http://www.slidego.com/home/
Speaker Deck: http://speakerdeck.com/; "Speaker Deck is the best way to share presentations online. Simply upload your slides as a PDF, and we’ll turn them into a beautiful online experience. View them on SpeakerDeck.com, or share them on any website with an embed code."
Prezi - The Zooming Presentation Editor: http://prezi.com/

Zamzar - free online converter: http://www.zamzar.com/; http://www.zamzar.com/conversionTypes.php; File convert service between document, image, music, video, e-book, compressed and CAD formats. No account or signup required.