Just noticed that Ebay cashback via quidco has been increased to 60% from 40%. Bear in mind that this isn't 60% of the price you pay, obviously, but 60% of Ebays commission. Still mounts up though and worth the slight extra effort of going via Quidco when you bid on Ebay. The cashback varies strangely and doesn't seem to follow any pattern, but I've been averaging around 4% to 8% of purchase price on the last 10 items or so.
I haven't had any problems with non-tracking as long as you go via Quidco both when you bid and when you pay.
Not really a 'deal' but I wasn't sure where to put it