It has worked nearly flawless for me for at least 5 years (and I don't recall beyond that). I say "nearly," because a few niche products (maybe AdMob dashboards

It has worked nearly flawless for me for at least 5 years (and I don't recall beyond that). I say "nearly," because a few niche products (maybe AdMob dashboards, or Analytics, I forget which) don't work with multiple accounts.