/ Public Transportation in Poland
These days here in Warsaw the pondlife called illegal taxis seems to have somewhat disappeared in the airport. There are 3 official taxi corporations in the airport. All of them are reliable. MPT is owned by the city and you cannot do wring with them.
Check also this link:
When using taxis in Warsaw, it is strongly recommended that you only use taxis with the following: the symbol of Warsaw - a mermaid - on both front doors, yellow/red stripes affixed to the glass along the front doors, a number stuck to the side of the vehicle, a hologram with the license number and the vehicle's registration number on the upper right-hand corner of the front glass and a sticker with price information per kilometer that must be displayed on the glass of the right-hand side back door.
The unlicensed sharks can still be found around the old town very frequently.
As for public transport, I find it reliable, cheap and especially in the rush hour trams and metro bing you everywhere way faster than a car.
Ticket-selling machines are to be found almost on every corner now, and sometimes in the new buses and trams as well.