This week we’re joining in Google’s celebration of all things mobile to make sure you’re aware of the power you hold in your fingertips with YouTube on your phone. Not only can you watch millions of videos, but also you can upload videos directly from your device; maybe it’s footage of a breaking news event, the drama unfolding at the party Saturday night, or your baby’s first steps. Since we want to provide the best experience for each of you, we occasionally have different solutions for different phones — so read on to find out what’s available for yours.

Almost any phone with a browser can access the YouTube mobile website at m.youtube.com. (Some mobile phone operators offer a pre-programmed link, so if a YouTube link displays on your phone, click it to visit our site.) Once there, you can access your YouTube account, your favorite videos, your uploads and your favorite channels. You can also share, rate, and comment directly from the mobile website to other YouTube users. Or, if you’ve captured a great moment, upload your own video by sending it via MMS or email (sign in to YouTube and click here to get your unique address) and it will appear almost instantly on the website.

In addition to the website, you can also play high-quality YouTube videos with special applications on many devices, including Windows Mobile, Symbian S60, iPhone, Android, Palm Pre, and BlackBerry Storm v1 devices. For devices not listed, it means that there were either technical limitations to getting YouTube on the phone, or the experience wasn’t a significant improvement over just visiting the mobile website. FYI, the apps for iPhone, Android and Palm Pre also support direct-to-YouTube uploads. To install the app on a compatible phone, visit m.youtube.com/app.

Keep an eye out this week as we tweet some useful tips and tricks for YouTube mobile. And be sure to let us know how you’re liking it and what we can do to improve the mobile experience. To get started, just Go Mobile!

Robin Norvell, YouTube Mobile Operations, recently watched “Mobile Tricks.”

Portland, Maine-based Certify, which offers an online expense management software suite for SMBs, has announced that it has secured $1.9 million in funding from “strategic and individual” investors. These investors include FluffCo (entrepreneur Irving Levin’s investment firm), Transactis CEO Joe Proto, angel investor Esther Dyson and Alpine Meridian chief exec William Benedict.

The company offers travel expense software and other expense report solutions on-demand, allowing its client’s employees to capture expense receipts via camera phone, SMS message, e-mail, voice mail, scan, fax, or image upload, with support for the iPhone, Blackberry and Windows Mobile devices. Certify delivers its SaaS solutions both indirectly through its Partner Network and directly to corporate users and individuals via Certify.com.

Founded in 2008, the company was bootstrapped by Robert and Alan Neveu. The two men previously founded RecruiterNet, an applicant tracking software firm that was acquired by First Advantage back in November 2005.

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Here’s our rundown of the week’s tech and business news. First, the most popular stories VentureBeat published in the last seven days:

AVG launches its free antivirus suite as Microsoft crashes its party — “AVG Technologies has made itself into a familiar name on the Internet by giving users antivirus software at a pretty good price: free. Today, the company is announcing that the ninth version of its AVG antivirus software will be available in mid-October.”

How Fourth Wall Studios hid an artistic radio drama inside Halo 3:ODST — “Created through a collaboration of startup Fourth Wall Studios and Halo franchise developer Bungie, Sadie’s Story is a self-contained tale. It is a radio drama embedded within the world of Halo 3: ODST.”

Dell building an Android phone for the US (report) — “Since the phone will reportedly run on AT&T’s network, not only does this news add to Android’s roster of device manufacturers, but it also means the mobile OS will be on all four major mobile networks in the US.”

Review: First look at Microsoft’s Windows Mobile 6.5 on HTC Pure cell phone — “I tried it out on the new HTC Pure phone from AT&T, and the experience is a big step up from the crappy Windows Mobile experience of the past.”

Why Charles River Ventures sat out on Twitter’s latest round — “When Twitter raised its most recent round of funding at $1 billion, a few players were conspicuously absent, including Union Square Ventures and Charles River Ventures.”

And here are five more stories we thought were important, thought-provoking, or just fun:

U.S. Chamber of Commerce strikes back after Apple defection: “We don’t have any regrets” — “Days after Apple announced that it would be quitting the U.S. Chamber of Commerce due to its opposition to greenhouse gas limits, the Chamber has very publicly shouted back.”

The iPhone finally gets Flash apps — but not Flash websites — “When Adobe announced the latest version of its Flash technology, a bunch of writers jumped on the fact that Flash 10.1 would eventually work on most major smartphones, except Apple’s iPhone. Looks like we spoke too soon. Sort of.”

U.S. private equity fundraising plunges 70 percent — “This means much less money will flow to technology start-ups over the next few years.”

Amazon debuts payment system for mobile phones — “Amazon Mobile Payments Service, or Amazon MPS as they’d prefer you call it, brings the comforting yellow Amazon button to mobile phone screens.”

Surprise! Dating site OKCupid finds white guys get more replies — “This week in slightly depressing confirmations that the online world is not so unlike the offline one: dating site OKCupid tracked the behavior of nearly 1 million users and found that race is correlated with whether people reply.”