Google makes tonns of money on advertising and Adwords is its main flagship. You buy visitors from keyword auctions, and it might be 2-3 times cheaper than Facebook.
I did however face a huge problem in it.
So back in 2011 Estonia switched to euro. What would you as engineer or a project lead do if you had users with that kind of money transition? Well, a good company would not care - your money would be transferred automatically based on some fixed ratio (that Estonian bank has up to this day and as a law).
What did Google do? Well, they softly blocked all users from that country. So first they sent emails with notifications, so that everyone could spend money on their campaigns.. and then you would get a errors that you dont have money.
Well that expected, right? Yes, but now if you try to follow their links, you will get to 404 or billing configuration which is not editable. In addition billing view seems to load a different language than navigation.
So now that you have account with billing that is not editable what do you do? Right. Read FAQ and write to the support, and well.. I got email in the end in estonian, to quote it..
Kui konto on kinni pandud, siis seda enam kasutada ei saa. Selleks, et vana maili edasi kasutada, võid teha järgmist:
1. Lisa vanale EEKides AdWordsi kontole veel üks administraatorkasutaja. Selleks vali mail, mida sa edaspidi kasutada ei soovi, ja mis jääb vana AdWordsiga seotuks.
2. Kui sui nüüd vanas kontos 2 administraatorit on, saad selle kasutaja, kelle maili sa uues kontos tahad kasutada, vanast kontost ära kustutada.
3. Nüüd on vana mail vaba ning võis seda uues kontos kasutada
Veidi ebamugav see tõesti on, aga kahjuks on AdWordsi süsteem nii üles ehitatud. Tänu sellele on võimalik kord kustutatud konto uuesti taastada (mida meilt sageli palutakse).
Juhised administraatori lisamiseks/kustutamiseks leiad siit: http://support.google.com/adwords/bin/answer.py?hl=en&answer=1235276
So basically they suggest making a new google user, tie it to adwords then remove old email.. and re-register again. Sounds like a lifehack because some engineer was too lazy to make "Delete adwords account" button.
Ok, so now I invite myself with yandex email, register, confirm email, confirm adding admin permissions, try to login with yandex email to adwords and boom, I get locked for no apparent reason (saying that this email is used in another Adwords account, though I just registered!). So I'm furious, spamming the login button.. and boom, I broke it. Argh.
Shut up and take my money! So I try again and get in, fast, before more bugs show up... Oh noes, they are already here.. quick, remove my old account.. Yeaah!
To conclude - I got Adsense working again, but it took me several errors screens, a new email account, a lot of hassle and roughly 2 years until I finally got the patience to go through all of this just to be able to pay Google for their main service that makes money.
I realize that it was probably easier for them to just block users than to do the migration, and its not that often countries change currencies, and that they probably forgot about the system that still shows those errors to poor guys.. Yet I have a feeling this is a bad sign for investors that Google is more bureaucratic, like Microsoft which probably still has mixed systems showing design from the 90'es.