Water Heater Anode Rod

Hi Tim your comment about the anode designed as a water inlet and sacrificial anode combined does not exist. What does exist is a anode designed with hot outlet and anode attached. Please reply if I'm wrong

Hello Tim:
First time writer. Two questions.

1. I noticed your pieces on tankless water heaters are fairly old. Hasn't the technology improved a lot in the last 2 years? Do you still feel the same way as of March 09?

2. I noticed on your video about traditional hot water heaters that you had written on your own heater that a new or second anode had been installed several years after the initial heater installation... therefore I presume it is of benefit to do so even after the heater has been in use? Does this improve the heaters life expectancy even after initial installation?
If so, I would like to install a secondary anode to my traditional heaters that are only three years old. What say you, worth it? -Mark

this is related to the anode issue. the connection for the cold water intake has leaked a bit and created mineral build up on the outside. although I tightened the connection, it began leaking again; I tightened again and went to Home Depot, suspecting something other than simple leak. Seems there's something called "galvanic corrosion" created by joining two dissimilar metals (e.g. copper pipe and steel water heater tank). I bought a set of two dielectric heat traps (galvanized steel lined with plastic) to replace the hot and cold water connectors and hope to extend the life of this now 11-year-old water heater. Wish me luck.