just a quick tip (for those who don't already know), it is possible to add URL's to your post in a similar way to certain other forums - in that the address is only shown when you hover over or click on the link.

The trick is this:

instead of entering

Code:

[url]http://www.machinemart.co.uk/product.asp?p=020110772[/url] 

you do this:

Code:

[/url=http://www.machinemart.co.uk/product.asp?p=020110772]click here[/url] 

which gives you click here instead of http://www.machinemart.co.uk/product.asp?p=020110772

on both Internet Explorer and Firefox, if you move the mouse pointer until it reaches the link, the pointer icon then changes into a hand - and the destination of the link is displayed in the bottom-left hand of the browser window ... so you can see where the link is taking you ... right-clicking every time is too much work for me too! 

... by reading the address displayed in the bottom-left of the browser window (in the status bar) when you have the cursor over the link 

that's how you can spot the fake paypal-type sites you're thinking of too!