By now there are so many new questions on Cross Validated that "active" topics disappear from the front page in around 8 hours. This is fast. This means that if I check the website once per day, I will miss a lot of questions that were active during the past 24 horus. This is particularly true because only new answers and edits count as "activity" (as far as I understand), but comments and upvotes do not.
As many (most of the?) questions are very specific and often of no general interest, I have a feeling that it is very easy to miss something really interesting.
So my question is: how do you monitor interesting questions and answers?
I believe that the idea is that worthy stuff should get upvoted, and one can look in the hot/week/month section. However, I noticed that sometimes high quality questions and answers go by without many upvotes -- I guess when the topic is too narrow; questions of very wide appeal often get a lot more upvotes (e.g. the recent question about Facebook).
Of course one can monitor only specific tags, but then one automatically misses a lot.
I noticed that quite often high quality answers to interesting questions have figures in them. I wrote a query to get last answers with images posted on imgur, but have yet to see whether it turns out to be useful.