Which email newsletters do you find most useful?

Tell us what email newsletters you can't live without

[gfidan]

As webmasters/entrepreneurs, we each have a few email newsletters that we just can't live without. I'd like to find out which email newsletters you find to be the most useful.

I'll get this thread started by listing my favorites:

High Rankings Advisor - [highrankings.com...]
Research Buzz - [researchbuzz.com...]
Search Engine Watch - [searchenginewatch.com...]
Publicity Hound - [publicityhound.com...]
Online Advertising Discussion List - [o-a.com...]
Linking Matters - [linkingmatters.com...]

[AsleepATheWheel]

>a few email newsletters that we just can't live without.

[b3ta.com...]
Fun stuff for the end of the week ;)

>I'd like to find out which email newsletters you find to be the most useful.

[slashdot.org...]
Does a news roundup every day, usually it's a great read. Plus the ones you've listed.

Paul