Wow. I had no idea about Uptrennd being sucked into Trodl until today. I made an exit months ago. I guess I should have done something with my 1Ups. Oh well.
As for The Ink Well, we have never stated an appropriate number of stories, or a limit. The most active writers typically post once or sometimes twice per week. We look for quality, and highlight some of the best stories in a weekly magazine. What we do ask is that everyone who posts in The Ink Well reads and engages with other writers' work by reading and commenting — two other stories for each one posted.
I have read a few, and enjoyed them :) It's actually hard to stop once I get going, lol