I noticed that and created a fix for it. Basically, create a snippet (I called mine tweettime) that has the following code in it:
<?php
$time = date('Y-m-d H:i:s O', $time);
return $time;
?>
Then replace the timestamp code in your tweet chunk with the following:
[[!tweettime:ago? &time=`[[+date_timestamp]]`]]
That should fix you right up.
Basically, the problem is that the :ago filter in MODx looks for a String time and the Twitter RSS provides a Unix timestamp. By filtering the Twitter timestamp through the above snippet, you convert it to a String time which MODx can use to work out how long ago it actually was.
Hope that helps. I thought I’d share the fix in case no one else had worked it out.
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