I was first made aware of them from curofone's post click here .
A little googling established that they are a large, well known French company that started trading here at the end of 2008. Some reviews have been good and where there were problems they undertook to resolve them. So they look to be OK but some recommendations from users of these forums would count more with me.
Hello, i first came accross them back in december on another forum and like what natdoor said i heard that they had one or 2 start up problem but that is to be expected on such a large operation at the start and whenever a problem did arrise all i have heard is good things about them, ie customer recieving money off vouchers for inconvience, customers getting delivery cost back if something has gone wrong with that or the website being changed almost straight away when a problem is flagged up.
if you go to click here you will find the forum i found them on and some deals that they are currently on CDiscount and if you go through some of the computing related ones you should find some feedback in their on what their service is like.