Clearly iPhone users have a serious need for instant messaging. After the App Store launched it seemed like everybody and their brother created an AIM client (including the protocol’s creators, AOL). Since then, I’ve been looking through the list and sorting the good from the bad. As it turns out, the 3rd party developers really busted their butts and turned out some fairly impressive apps. Even the AOL-made app is solid.

Even though Twitter has experienced a pretty hard time staying up 24/7, that hasn’t slowed down the development of numerous applications that integrate with Twitter.

At Make Use Of, we’ve covered a ton of tools to make your Twitter better. From 4 Tools for More Productive Twittering, to other Tools and Apps to Improve your Twitter Experience. All you really have to do to see everything we’ve listed on Twitter is to check out the “Twitter” tag here on the website.

Voicemail for cell phones has basically been the same since it was first released. Someone calls you and if you don’t answer or your phone is not available on the network, the call is forwarded to voicemail. A signal is then sent to your cell phone that there is one or more messages waiting and you dial in to pick up those messages.

What a 20th century solution!

Wouldn’t it be great if you could have your voice mail e-mailed to you or otherwise retrieve it without having to call back in to your number?

Here on makeuseof, it’s all about cool free websites, software and tips. While this post perfectly fits into this philosophy, it’s slightly different from most of the stuff we have published before.

Basically, what you’ll see below, is a list of web services where your phone (not a PC) plays a main role. Whether you need detailed driving directions, someone to wake you up in the morning, quick answer to whatever question you may have or to make free overseas call, it’s all here and freely accessible from your phone. Most of them we have mentioned before, but this time they’re all on one page along with some new ones. Enjoy!