The $9.99 pro version of RunKeeper [iTunes link] serves as a nice alternative to Nike+, especially for the interval-training minded runner.

While the Nike+ kit serves a means to an end for many runners, it may not suit everybody's needs. There's the additional cost of the transmitter and receiver (USD $30) for iPod nano owners -- iPhone and iPod touch owners need only purchase the transmitter for USD $19. Then there's the cost of Nike running shoes, which are the only shoes that accommodate the Nike+ transmitter; or as a workaround, you could get a pouch that fits the transmitter on your shoelace; and these usually run about $10.

And then there's the issue of accuracy. I personally find a calibrated Nike+ kit very accurate. For instance, during a 4 mile run (I mapped out the trail on walkjogrun.net prior to running) RunKeeper Pro showed that I ran 3.95 miles while Nike+ showed 3.90 miles. Others, however, have not been as fortunate. And this is understandable, as the kit works by detecting the steps a person takes; and as runners' gaits and strides can sometimes change during a run, this may affect the kit's accuracy.

Accuracy issues aside, RunKeeper Pro, at face value, appears little different than Nike+: at its core, RunKeeper Pro aims to track your running progress, albeit with different technology than Nike+. But dive a little deeper, and what you'll find is a training gem, especially for interval-based workouts.

Whether it's because you're at school or work all day, finding the time and energy to workout is difficult. So, why not make it easier on yourself and find a partner to workout with via iChat Theater?

When iChat went Leopard, it included a series of features and enhancements. One of these enhancements was iChat Theater. iChat Theater allows you to share documents, photos and videos with your buddies in an easy and oh-so-Apple elegant way. With Snow Leopard, iChat Theater gained the capability of displaying content at a higher resolution: up to 640 by 480 pixels.

While photos and presentations translate well over iChat Theater, I've found that sharing videos is not without its hiccups unless you have an extremely fast and consistent Internet connection with robust upload speed. I've found both video and audio quality to be unacceptable for watching movies or TV shows.

But this doesn't really matter when you're working out.

Sure, there may be some lip syncing (audio delay) and the video quality may not be the greatest, but hey, you're working out: you've won the biggest battle already. And, you're not alone: your buddy on the other side of the iChat will push you along as well.

To start iChat Theater, click on "File" and then select "Share a File with iChat Theater." After selecting your file, you will be asked to start a video chat. You'll then need to highlight the buddy you'd like to invite, and the click on "Buddies" and then selecting "Invite to Video Chat."

Alternatively, you could start a video chat with a buddy and then initiate iChat Theater.

My sister recently purchased the P90X workout program for me as a gift, and an intense workout regimen it certainly is. After I opened up the box set, I immediately created an iPhone formatted version of it (HandBrake), which I take with me when I workout at the gym or the park with a friend of mine. On days when I'm working out at home (after a long day's work, of course), the workout sessions are done over iChat Theater.

So while iChat Theater can't do all the heavy lifting for you, it certainly finds alternative ways for you to motivate yourself to do it.

You're one of those crazy people who enjoys working out ... and reads tech blogs. It could happen. You've got the Nike+ sport kit and lots of great Nike Sport Music [iTunes link]. What else could you need?

How about free workout videos? Lifehacker points out a series of four free workout videos from Men's Health, optimized for the iPod. Take your pick of

• The at-home muscle plan
• The Marine Corps workout
• Pack on muscle like a pro
• The ultimate strength-boosting workout

Once you've downloaded* the videos, either double-click the files or just drop them into iTunes. Now you're ready to get pumped!

*A free registration is required or, as LH mentions, just click your browser's stop button before the page loads completely and you'll see all the download links. You're welcome.

Now don't think we're just trying to pimp Nike's stuff here because we're getting hookups or something (we have to run out and buy our own kits like anyone else), but TUAW reader Mr. Gaskell recommended a tip that could allow you to use the new iPod Sport Kit with any shoes, without the need for awkward lace tying or unsightly duct tape: Nike makes a small wallet accessory (pictured) called 'Nike Run Shoe Wallet S05' for $10 that attaches to the top of any shoe. It's designed to hold small personal items for a run, such as change, but (as I remember) it's too small even for something like a driver's license, but it should be a perfect fit for the shoe sensor. I'd link to it, but I can't find it anywhere at the Niketown site; I've only seen it in a brick and mortar Niketown store. I'm sure they're also available elsewhere on the web, such as eBay or in similar forms from competitors.

I have no idea if the kit is still accurate when attaching it with an accessory like this, but we're receiving reports that people are having success with jury-rigging the sensor to their shoes with the aforementioned unique lace tying and duct taping techniques; using something like this wallet doesn't sound like your results should be any different. Any readers out there try this yet?

We're not sure how a one-sentence support document made it into Apple's support knowledgebase, but this strange doc somehow snuck past the velvet rope. It simply states: "There is no way to remove workout data from the nikeplus website", with a 'stay tuned for more info' bit at the end to finish off what is probably the shortest support document we have ever seen.

Getting to the topic, however: it seems just a bit strange that there is no way to remove workout information from this supposedly revolutionary new service/iPod accessory. It's not like we're suddenly terrified about Nike's trampling of user privacy, but we wouldn't be surprised if a few tin foil hat fashion aficionados raised at least some sort of a flag over this.