They launched recently their S3 Storage, so I think some initial issues are inevitable.
Also, it's not good that they do not have any status tracker that shows summary stats on uptime over the past, say, year so one can get a quick idea of how reliable the service was historically.
The status monitor only has entries for incidences from the past 7 days. It could have been down for 10 days a month ago, you wouldn't know this unless someone wrote about it.
_You_ know the service is new, but this isn't mentioned on the landing page either. They don't say something like "only 4 months old, public beta" - in that case I wouldn't feel negatively surprised.
I learned (the hard way) to have a plan b for everything. I'll study an emergency solution in case of a prolonged downtime.