Airline charges to use overhead lockers

Why not?

Think its a great idea - pay for what you want to use, or don't as the case maybe.

I must admit, it is frustrating watch people flouting the cabin baggage size rules with bags that barely or sometimes don't fit in to overhead bins, so seems like a good idea.

The funniest I've seen is coming back from Edinburgh on a  twin prop puddle jumper rather than the advertised jet, with overhead bins the size of postage stamps and baggage crammed under peoples legs as it wouldn't go under the seats.

Reminds me of package holiday flights where a family's hand luggage consisted of a number of supermarket carrier bags.  That was in the days when only one person was needed to check-in their party.  

Oh, the Flybe Dash8! As a friend said after a return trip to Dusseldorf on one, why??? I got to gate area at Edinburgh to find two of those parked up.  Very pleased to see other destinations than Birmingham for them.  Props not a favourite, especially on a wet and windy August evening.....