Trap for old players - never let a domain expire

in the early days i changed my domain to Dumb thing to do but the blog was still low profile and i got through it. i kept live with an auto-forward to the new domain. After a couple of years i saw i was getting very few incoming traffic with as the referrer, so when it came up for renewal i let it expire.

bad move.

Google page rank dropped from 5 to 4.

Why? Even though few people were coming that way i still had some nice respectable sites pointing to and i lost all the "linky love".

keep those old domains that redirect!!!