I started my litrefsarticles site in 2010. It's just reached 250,000 hits. I think much of the recent increase in hits is due to bot-traffic, though particular items suddenly become popular (perhaps when essays are due). The most popular page there is Child narrators in adult fiction.
It's not easy to compare web-stats. On Top 24 Magazines for Flash Fiction - Bookfox there's an attempt to determine how much some Flash sites are read, and which are worth submitting to. The numbers can be low - e.g. the page says that the venerable "Vestal Review" has 2,000 visitors monthly. Perhaps literary web mags aren't read much more than the paper ones are, nor so thoroughly.
I'm more successful with my work stuff -
|Search string||Number of results||My page's Google ranking|
I think that's more to do with the age of the pages and where they are than what they contain. My old Literary Quotes page (on a university server) regularly attracts 7k hits/month whereas http://litrefsquotes.blogspot.co.uk/, which has the same material, gets more like 500 hits/month, many of them from Russia.