One reason why I send very few reviews despite parsing through almost all BDSMlibrary's production is the limited format. Also you're not sure the review will be read at all.

Specific hints: I think the scale for assessing is wrong in putting 'could be printed in a mainstream magazine (or something to that effect) as the top notch mark. To me that's no distinction! Magazine stories are soo boring and vanilla anyway! I like stories to be wicked to the extreme. The HAVE to be readable, but my reading committee is not a boffins' club - it's my clit and finger.

AND the review form should include a question whether the reviewer would welcome further exchange w/ the writer. The writer than chooses whether to pursue or not. Less intrusive than email, and (s)he still gets the public praise (s)he wants!

(I abstain from negative reviews. Sorry. I know some would be needed.)