[development] Best place to store user data

[Steve Yelvington]

Awhile back I wrote a simple module to fetch my Facebook status line, 
using an open RSS feed, and make a block to display on my blog. The 
fetched data is stored in cache for a limited period.
http://drupal.org/project/fbstatus

I've received a number of requests to upgrade the module to support 
multi-user scenarios. In such a case, cache obviously isn't the right 
place to put the data.

But since there should be no more than  one Facebook account per user, 
it seemed that creating a table (as seen in the Twitter module) would be 
overkill.

So I began looking at using profile fields (requiring profile.module) or 
the serialized user data.

But I'm likely to move the updates into hook_cron, and I can imagine a 
large site having to step through the whole user base, looking for 
statuses needing updates.

So now I'm back at a discrete table.

Is my thinking right?