I’ve recently been testing a new broadband line speed checker called Isposure. The download is free and the speed tester is easy to install on Windows PCs.

It is unobtrusive while running and seems to provide accurate speed results for my ADSL connection. Isposure provides charts of your connection’s behaviour and the ability to compare it with other local providers, presumably based on collated speed statistics of other Isposure users.

This doesn’t suprise me particularly, as one of the authors of the software was a former colleague of mine, who was a particulary skilled developer.

If you’re interested in trying the product it can be downloaded from Isposure.com. When you are installing, you can use the promotional code “Luke Jagger”.

It is so good to see a simple, free broadband speed checker that does what it says and doesn’t try to sell you anything.

There’s been quite a bit of coverage on the radio about a scam, where people receive a call on their mobile phone, but it rings off quickly, either just before they answer or as they answer.

The scam relies on the victims having a natural, and reasonable inclination to ring the number back.

What the victim hears when they call back is the tone that tells them call is ringing. Many people are very patient and listen for a fair time before they give up. What they are actually listening to is a recording of a ringing tone, on a premium rate number. of course, the longer the victim holds on and the more they call back, the more money they are paying on their phone bill to the scammer.

I’ve recently had a selection of calls to my mobile phone which fit the profile, but I have not wasted my money by ringing them back. In my case they all called on different days between 11:00 and 12:30 GMT, presumably hoping I’d call them back at lunch time.

The numbers which called are :

• 07506738901
• 07791832748
• 07791835658
• 07791841162
• 07908583355
• 07908583385
• 07908583386
• 07908583387
• 07944453453

My advice is not to call back any number you don’t recognise, particularly if it rings off quickly. Genuine callers will wait for you to answer and will try again.

If you know of any other numbers that might be linked with this type of scam, please add your own comments.