Twitterlerts allows people to tweet, or share tweets, from their mobile device. Frequent searches are saved and can be automatically monitored, even set to emit a tone.

Spotify, at least the premium subscription version, will soon be available for iPhones in countries where it’s licensed. Currently that means Sweden, Norway, Finland, Britain, France and Spain.

In this book Ed Baig will help you get the most out of your Palm Pre. Included are instructions on the Pre’s finger gestures, using the web, and calendaring.

Going overseas with your cell phone can be costly. Roaming charges can be exorbitant and text messaging can cost you more than a voice call.

Netbooks are small, inexpensive machines designed to connect to the internet. What else can you do with them? New York Times columnist J.D. Biersdorfer covers operating systems, free software, and internet-based programs that can be used on your netbook.

Harlan Yu created a Firefox plugin to help lawyers retrieve documents from the government’s PACER system and bypass the 8-cents-per-page charge. All of which has panicked some court officials.

Mac-compatible software for Sony’s new eBook reader is available for download. The software allows users to transfer, and read, their e-books to their Macs.

The N900 is based on the latest release of Maemo, the Nokia mobile Linux platform, and includes GSM and 3G access, WLAN, Bluetooth, camera, assisted GPS, and a touchscreen complemented by a hardware QWERTY under a slider.

Those who rely on their laptop computers have a new option for extending battery time. An external laptop battery from LaptopBatteryExpress.com can add an additional 3-4 hours of run time and now can fit nearly 10,000 laptop models.

In size it’s mid-way between the Kindle and the Kindle DX, it costs about the same as a Kindle, but handles more e-book formats, and it has a touch-screen. Did Sony just reconfigure the playing field?