I haven't answered any question so far but this strikes a nerve. I've gotten too many spam comments on some of my online blogs.
Despite Hubpages' position of "comments are not for promoting your hubs or other sites" as clearly stated under the capsule, I personally don't mind commentators linking to other web pages provided:
- the comment is of value; and
- the web page linked to is Ok.
How do I tell whether a comment is of value?
If the commentator obviously read/skimmed your hub and pinpoint on a point or two in the hub, that's value to me. Then again, sometimes comments like "Great info there. Thanks" are of value when the commentator is genuine and sincere. But other times you can't help but feel that such comments are just there for linking sake. This can partly be determined by the web pages they link to.
We all have our own ideas of a spam site and we know one when we see one. Obviously I won't allow the comment if it links to one. The best links would be those that are relevant to the comments and my hubs. But so long as the site is decent, I'll probably just let it be.
So, to answer your question, I don't just approve them all. I approve them based on the 2 main criteria above. These aren't set in stone though. I may be stricter or more lenient when I actually make the decision. Catch me in a bad mood (like when I've too many spam comments that day), I might just delete them all good or bad. :)
Whoever say men are rational? ;)
PS. Having said all that, I realize that what I'm trying to do is to determine whether the intent of the commentator is purely to spam. So long as it isn't, I'm quite happy to approve it.