Every so often the inbox is full and the blog is empty; this is an attempt to remedy that.
How to do an introduction online. X, meet Y; Y, meet X. X is notable for a1, a2, a3; Y is notable for b1, b2, b3. You have a mutual interest in c1, c2, c3; you should connect. There are several of those pending.
How to make the best of not responding to mail promptly. Answer long, hoping that your thoughtfulness makes up for your tardiness. Follow up with a new question, assuming that anything that went more than some period of time - two weeks, a month, or more - was overtaken by events and you want to be seen as having good follow up skills.
How much inbox is too much inbox. Inbox zero, for sure, in someone's dreams. I'm generally happier when the bottomless queue reaches 100 or less, since it seems more likely that each one might represent a chance to connect with someone in particular. There's also a time duration beyond which it makes more sense to start afresh than it does to reply.