Imagine that you're at home one night and want to send a message to your partner or roommate or someone else, but you really don't want to get out of your chair, and you don't want to yell loudly enough for them to hear you. So pick up your iPhone, but you don't want to send an SMS or call them. Surely there's an app for that...

Actually, there are several; some better than others. Take Texter for example. For 99¢ you can send messages back and forth with other people on the same Wi-Fi network. Sounds promising, right? After all, SMS costs are ridiculously expensive, so why not pay a $1 fee to buy an app to send messages back and forth.

The idea isn't bad, but the implementation is. First of all, Texter only works over Wi-Fi. And not just any Wi-Fi. Both users must be on the same Wi-Fi network. But maybe everyone in your family has an iPhone or iPod touch, so you're still willing to give it a try. Well, don't open your wallet just yet, because there's one more detail that we need to mention -- Texter doesn't support push notifications. Since Apple doesn't allow third party apps to run in the background, the end result is that you can only communicate with other Texter users if they already have the application open on their iPhones.

I can't even imagine a "use case" for this application. Who would sit around with their iPhone on, running an application in the hopes that maybe someone in the same home/office with the same application might want to chat with them? It simply is never going to happen.

If you want to avoid SMS charges, but still want to send quick messages to other iPhone users, why not use AOL's free (ad-supported) AIM iPhone app? It works over EDGE, 3G, or Wi-Fi, supports push notifications, and also allows you to connect with a slew of other people besides iPhone users.

Maybe you don't like AIM or SMS. Maybe you really like the idea of having an iPhone app that is quick and easy and doesn't require any login or giving away your cell phone number (like SMS does). If that's the case, checkout the 99¢ Ping! app for iPhone. It also works over EDGE, 3G, and Wi-Fi and supports push notifications. You'll also have that healthy self-satisfaction of knowing that you are only communicating with other red blooded iPhone/iPod touch users.

I'm sure there are a slew of other alternatives to SMS for the iPhone that work over EDGE/3G or Wi-Fi and support push notifications. Tell me about your favorites in the comments (bonus points for including an App Store link).

"Every $100 you move down in consumer electronics brings in a lot more customers," [Gartenberg] said. "Ninety-nine dollars is a psychological price point, so that's a real barrier to move through. It becomes something people can afford - it becomes an affordable luxury.

It's been under the rumor banner for some time now, but we've been told by a trusted source that the long-awaited AT&T iPhone-as-modem tethering plans (preliminary details in MacBlogz' post from November: 5 GB data cap, $30/month supplementary cost) may be ready for prime time during Macworld Expo this week. The tethering announcement might not rise to a keynote-worthy level; it could simply be publicized as a press release during the show.

While $30 is a steep charge on top of an iPhone data plan, it's still cheaper than the $60 you'd pay for an EV-DO or HSDPA card plan for mobile data; for some users it may make more sense than a standalone device. Granted, you can already tether a jailbroken iPhone, but that may get you stomped on by the traffic cops rather promptly.

Another tidbit from our source lends credence to the MegiPod rumor (a larger form factor for an iPod touch device) floated by TechCrunch last week. No timeframes were discussed, so the late 2009 on-sale date is still in play. It's not clear how the hypothetical unit would achieve this feat, but the suggestion is that it would have "full application compatibility" with currently available iPod touch apps ... puzzling, as it implies either resolution-independence for the apps or some pretty impressive scaling tricks to accommodate the larger screen size.

Plenty of folks are probably getting iPhone gift cards this season, and for anyone who wants to make their iPhone the hit of the party (later, once you've actually purchased and activated the thing) here's a lineup for you: some speakers (which fit just about every iPod ever made plus the iPhone), a stylus to keep grubby fingers of your precious, and a case.

I tested the JBL speakers and the stylus. The JBL speakers provide an astonishing amount of sound in such a small package. We turned it up as far as felt safe, and the kids had their fingers in their ears. Plus, at either loud or soft volume the audio was always very clear, not muddled with bass or too tinny on the high end (this was from the iPhone with no EQ).

The Pogo stylus does what it says: provides a poking stick for the iPhone's surface that works. It's a stick, and it pokes -- that's about as good a recommendation as you'll get from a stylus. The thing was just a short piece of aluminum too, so there's no heft at all. If you're used to a Mont Blanc in your hand you may be disappointed, I guess.

Thanks to Dr. Bott for the JBL On Stage 200iD Speakers, iSkin Revo2 iPhone 3G case (in red and black) and a Pogo iPhone stylus.

• Open to legal residents of the 50 United States, the District of Columbia and Canada (excluding Quebec) who are 18 and older.
• To enter leave a comment telling us what music you would play on some really loud speakers.
• The comment must be left before December 31, 11:59PM Eastern Time.
• You may enter only once.
• One winner will be selected in a random drawing.
• Prize: JBL On Stage 200iD Speakers ($149.95), iSkin Revo2 iPhone 3G case ($39.99), Pogo iPhone stylus ($19.95)
• Click Here for complete Official Rules.

• iPhone 3G 8GB Black - $99US
• iPhone 3G 16GB Black - $199US
• iPhone 3G 16GB White - $199US

Want to unlock your iPhone 3G and place it on any GSM network? Your long wait may soon be over. The anticipated unlock, codenamed "yellowsn0w," should be available later this month -- they are projecting a New Year's Eve release. If you wish to unlock your iPhone, you will need an iPhone 3G with 2.11.07 baseband or earlier, and it will need to be jailbroken.

In theory, if you update your iPhone 3G to the 2.2 firmware release in iTunes, you will lose the ability to perform the unlock because iTunes will update the baseband version. If you plan to do the unlock, you will need to update your iPhone using Pwnage.

Yesterday we told you about DFU mode not working with Macs running the new OS X 10.5.6 update; today, the dev team gave us a little insight into why this might not work. Remember when the unibody MacBooks were released and there were problems with jailbreaking attempts? Well, this is basically the same problem, except it is more widespread. The dev team believes that this is an error on Apple's part, and has nothing to do with Apple attempting to shut down the hacking community. Until there is another update you can attempt to manually replace the affected kernel extensions with the 10.5.5 versions, but the dev team warns that you should "attempt at your own risk."

Thanks to William and others for the tip!

[via Engadget]