store large String as col value

[Cyril Auburtin <cy...@gmail.com>]

In order to store picture, transfered as a base 64 encoded String in the
message

I wanted to ask, what is the limit for column values (since the wiki is
down just now)

the row has a limit of 2GB, it should be enough for pictures, but a single
column Row, has also a limit of ~2GB?

Is it critical with replication? Is it better to cut down the String in
shorter pieces and store them in different rows to support more easily
read/write towards replication?