Is a particular mobile number connected to Telstra, Optus, Vodaphone, etc. 

You can find out for free at this link.

See also:
Call direct to Voicemail / Messagebank for Optus mobiles.

In response to Tom's Comment (which is appreciated), I've conducted a check of an associate's mobile number who I know used to be on Telstra, but has changed to Optus.  The photo below is the result of the search on his number.  As you can see, it shows the "Original Network" as well as the "Current Network".

Picture
 
 
Need to access a zipped and locked bag undetected?  Here's how.
 
 
A security flaw in the iPhone allows strangers to bypass the handset’s lock screen with a few button presses.

The quick method to circumvent an iPhone’s passcode-protected lock screen:
  • tap the “Emergency Call” button,
  • then enter three # signs,
  • hit the green Call button
  • and immediately press the Lock button.
That simple procedure gives a snoop full access to the Phone app on the iPhone, which contains the address book, voicemail and call history.

Apple:  “We’re aware of this issue and we will deliver a fix to customers as part of the iOS 4.2 software update in November."
 
 
If you need an email address to register on a website, but don't want them to bombard you will possible spam, a disposable email address is the answer.

The following services create an alias address.  Each have varying life-spans and some allow you to decide that time.

10 Minutes Mail
As the name suggests, your email address lasts for just 10 minutes.

My Trash Mail
Use any of the sites domains for as long as they stay active.

MailExpire
Your email address can last from anywhere between 12 hours to 3 months.
 
 
Forgotten the password to log onto the Windows system on your PC
http://www.pcloginnow.com/index.html

Forgotten Email or Instant Messenger Passwords.
http://www.windowpassword.com/
 
 
Our two favourite sources for completely free audio books are BooksShouldBeFree.com and Project Gutenberg’s Audio Books Project.

http://www.booksshouldbefree.com/

http://www.gutenberg.org/wiki/Gutenberg:The_Audio_Books_Project

BooksShouldBeFree.com’s free audio books for downloading are all read by volunteers, and some of them are very good.

Project Gutenberg’s free audio books project offers two different types of audio books for downloading: those read by human volunteers, and those ‘read’ by a text-to-speech computer program.

 
 
The iPhones generally store more data than other high-end phones -- and investigators (plus supicious spouses) can tap in to that information for evidence.

And while some phone users routinely delete information from their devices, that step is seldom as final as it seems.  When you hit the delete button, it's never really deleted.

Every time an iPhone user closes out of the built-in mapping application, the phone snaps a screenshot and stores it.

iPhone photos are embedded with GEO tags and identifying information, meaning that photos posted online might not only include GPS coordinates of where the picture was taken, but also the serial number of the phone that took it.

Even more information is stored by the applications themselves, including the user's browser history.  Clearing out user histories isn't enough to clean the device of that data.  Just as users can take and store a picture of their iPhone's screen, the phone itself automatically shoots and stores hundreds of such images as people close out one application to use another.

The keyboard cache logs everything that you type in to learn autocorrect so that it can correct a user's typing mistakes. Apple doesn't store that cache very securely, so someone with know-how could recover months of typing in the order in which it was typed, even if the e-mail or text it was part of has long since been deleted.

Link to full article
 
 
Need to find a specific file on the internet?  Try the following link to search for specific files and file types.  The Advanced Search provides additional matching criteria.

http://www.findthatfile.com/index.php

Here's another search engine for pdf, Word doc and PowerPoint files.

http://www.osun.org/
 
 
Most Internet Service Providers (ISPs) have an email attachment limit of around 15 MB.  But, what if the file you want to send is larger than 15 MB?

Google's Gmail has a 25 MB limit and once uploaded from your PC to Gmail, is sent almost instantly to another Gmail account.

For files larger than 25 MB, we use www.yousendit.com

YouSendIt has a free 100 MB limit.
 
 
Need to access your files from multiple PCs and your internet capable phone?

We have been using DropBox for a while now and find it incredibly useful.  After setting up a free account (just supply an email address and password) you download the DropBox program and install it on all the PCs, laptops, etc., on which you would like to access the same files.  
After accessing the DropBox account once (using the original email address and password) from that PC/Laptop, any files placed into the DropBox icon on one PC are then accessible from every other PC.

It's also a great way to just backup important data on mutiple PCs.

This link will get you an extra 250 MB of bonus space over an above the free 2 GB limit.