In my personal case:
Android - bugs that stay open for years (my own post from a year ago is unresolved, and it affects all Spanish-speaking Android users
https://news.ycombinator.com/item?id=4532596 )
Chrome: other than it displaying advertising, I haven't heard much bad about Chrome
https://news.ycombinator.com/item?id=5218153
GMail: if you have a problem with GMail, you're SCREWED. My mother still hasn't got her account back, and mine was hacked some time ago (I now have 2-factor auth, which still has some bugs - for example someone reported a bug with Android auth even if you revoke the keys)
https://news.ycombinator.com/item?id=3839726
Adwords: don't get me started. The rules for an Adwords account are really opaque. I think there's a post on the frontpage right now. Ahh, here it is:
https://news.ycombinator.com/item?id=5523992
I've had my run-ins with Adwords too.
While I still depend way too much on my GMail account, I have my personal email somewhere else, and I won't consider it for business use (and they probably are going to lose millions of dollars because of that).
There's still not a strong challenger to AdWords, but I'll definitely look forward to it.
Even Google search is starting to degrade somewhat, it's still not Altavista-level.
To be fair, Google still produces some amazing products which they give away for free, but they generate a lot of ill will by not giving even paid support.