Wireless (wi-fi) hot spots are rife. Numerous cafes and bars, and nearly all hostels and hotels offer the service for free. A number of towns and cities in the region have free public wi-fi across the centre.
Data is cheap. Buy a local SIM card, pop it in an unlocked phone, laptop or USB modem, and away you go. Deals may mean you pay as little as €15 to €20 for a month's unlimited access.
Internet cafes are increasingly uncommon, but libraries provide free or very cheap internet service.