Help with classifying comments

Comment from author

Any communication from the paper's author. Usually they're providing corrections, updates and replies.

"As of 4/13/06, correspondence for Peter K. Rogan should be sent to:"
"Please DO NOT utilize the version of the software as currently available. It will not function as specified ... [we're working on a fix]"
"Please note that there is a typo in the phosphopeptide sequence in the METHODS section"

Comment or correction from editors

Reviewer reports, corrections, typo fixes etc.

Annotation on paper

Small fragment of text attached to a particular part of the paper - sorry, I realize that these are quite hard to identify!

"Explanation of this acronym: ..."
"This refers to..."
"Here is the paragraph mentioned in comment 1"

Interpretation and analysis

Journal club style discussion. Readers suggesting how the results of a paper might be interpreted.

"This is a great paper ... I think it would be interesting if..."
"Recent research data suggests that the lethality of the H5N1 strain..."
"We would like to inform readers of this paper of our prior efforts in the area of PCR primer design"
"Researchers planning to follow the 'plan A' approach discussed in this paper may benefit from first checking out..."

Requests for clarification

Readers asking for more information from the authors.

"Were the PAO2 values directly estimated by sampling end tidal alveolar gas?"

Direct criticism

Readers pointing out possible experimental flaws or errors.

"We think, however, that the authors have overlooked an important confounder when adjusting the relationship between exposure and allergic disease.."
"The fact that the network is trained on only 20 samples and validated on the rest 20 at the end of the flow schematic does not mean that a correct validation has been done"

Bonus links or citations

Things that could plausibly have been included in the paper. Quite common in bioinformatics papers. Links to datasets, implementations and software downloads.

"The described method is available as an R script and can be found at..."
"The software described in this article is available online at http://dulci.org/sage/."
"I have made the test data we used for this paper available from http://biotext.org.uk/ on the Downloads page."

Crazies

Self explanatory.

Other comments

Usually appreciative comments.

"I feel that this is a timely commentary, addressing the issue of semantic enrichment of our scientific literature"
"This paper is, in my opinion, the by far most clear and up to the point paper I ever read on the analysis of microarray data"