Lifehacker has a good guide to weblog comments with the following tips:
- Stay on topic.
- Contribute new information to the discussion.
- Don’t comment for the sake of commenting.
- Know when to comment and when to e-mail.
- Remember that nobody likes a know-it-all.
- Make the tone of your message clear.
- Own your comment.
- Be succinct.
- Cite your sources with links or inline quoting.
- Be courteous.
- Don’t post when you’re angry, upset, drunk or emotional.
- Do not feed or tease the trolls.
What would you add or subtract from the list?
About Darren Rowse
My name is Darren Rowse and I’m a full time Blogger making a living from blogs like 
It’s pretty hard to comment after a list like this one…;-)
I think it’s mostly common sense. Be a nice guy and your comment will be appreciated.
Comment about these comments about comments: RSS feed to comments is a must have for the blogger. You don’t have it, Darren.
Darren,
This fits in with another blog post I just read and posted about.
It has 9 actionable points for successful blogging and successful living.
This list and that one make for a great day of blogging.
Clicking my name, of course, takes you to my post or here’s a direct link:
http://www.thementalfitnesscenter.com/blog/the-blogging-life/
Thanks for the info, I hope this adds to the discussion.
Don’t comment for the sake of commenting – those one’s really annoy me – they’re called “me too” comments.
Know when to comment and when to e-mail – too true. People sometimes forget that a comment is there for all the world to see – if it’s personal in nature go the email route.
be succinct – yup, that’s one of my faults … I like to crap on too much.
Do not feed or tease the trolls – ahh, shucks c’mon, that’s part of the fun – slapping the trolls around a little.
Don’t post when you’re angry, upset, drunk or emotional…
“We never knew Tom drank till he tried to blog sober.”
Let me have a go then.
Congratulations Darren, I noticed you have passed 1000 RSS subscribers. How about your views on RSS, RSS seems to be very underestimated and having 1000 subscribers is a big deal.
Ok then what about hijacking posts, wow, just like real conversations.
hi darren as my collegue (conic) pointed out i have opnion so some like that
Pretty nice site, wants to see much more on it!