Sorry to spread yet more negativity, but I will anyway because this is pprune afterall!
Aside from of the relevant arguments, PPL holding instructors being paid is just about the last thing that flying training & therefore aviation needs just now with:
1. The MPL on the horizon possibly allowing students to bypass most of the aircraft based flight training
2. Lots of instructors chasing few jobs
3. Credit crunch economics hitting flying school bookings hard
4. Fuel costs
5. Major airports forcing out flying training with huge landing fees
6. Environmental protesters
7. Have you seen how many plane crashes there have been in the new over the past few weeks?
To those waiting with hope for the new EASA rules: If you want to instruct, do a CPL. If you are good enough to teach PPL, you'll have no issues passing the CPL.