I am pretty well booked up on podcasts, and so I only add new ones if I can replace an existing one. With the ending of one podcast by a comic-book blogger, I was able to start listening to a new podcast by a comic-book blogger. As a matter of fact, there is a clear path that led me from the former to the latter.
The excellent Longbox Graveyard podcast is ending its run as a 12-episode maxi-series. The monthly episodes that Paul O'Connor (guest on the Book Guys podcast, episode 76 - video here) put out covered a range of interesting comics-related topics. My favorite episodes were #3 (digital comics), #4 (father and son discussion of Frank Miller's Holy Terror), #9 (Hollywood pitches), and #11 (Top 10 issues of Amazing Spider-Man).
Episode #11 of the Longbox Graveyard podcast introduced me to Mark Ginocchio, proprietor of the Chasing Amazing blog. On the blog, he chronicles his thoughts on comic books, mostly set against the backdrop of his goal to collect every issue ever of Amazing Spider-Man. As of this writing, he is missing five issues, not counting annuals.
On the Chasing Amazing blog, Mark mentioned the The Superior Spider-Cast, which he co-hosts with Dan Gvozden. This is a new podcast (3 episodes, as of this writing), covering new issues of Spider-Man. They claim it is going to be a monthly podcast, although less than two weeks passed between the first and second episodes, and then a few days more than two weeks between the second and third. It is a very informative and entertaining look at the current Superior Era of the character.