Something which may be disturbing to think about in this context is how limited our access to our own electronic "memories" has become over time, in comparison

Something which may be disturbing to think about in this context is how limited our access to our own electronic "memories" has become over time, in comparison with how much it was before. For example, if you were using MySpace or LiveJournal, or early Twitter, you could see your entire history, and in some cases do query and search like "between 2 and 3 years ago" or "everything with X tag". However, with today's services, it is becoming increasingly difficult to do that kind of querying outside of the, if you're lucky, 3 different sorts of hot/top/new. Some places will also limit the number of items you can see.