This blog gets hit by spammers.
A couple of years ago the spam load was pretty bad; then we moved to a server with a new IP address. I reckon the blog spammers are using tools hardwired to go to a specific IP address (saving the DNS resolver overheads) and blast some fields at a CGI script. Unfortunately in October the spammers caught up with the new IP address and the spam load hitting this site has been rising ever since, from around 200 spams/month to around 7700/month currently (and rising).
The vast bulk of the spam (around 90% of it—over 200 spams/day) come from roboposters these days. And they have a common characteristic: they either leave the "your name" field blank when posting, or they fill it with "anonymous".
As you can see if you hang around the discussions here, not much spam gets through. We have filters; we also have volunteer moderators (both to nuke any spam that makes it past the filters and to enforce the moderation policy).
Unfortunately, the robospammers mean that some changes to the way I run this blog are necessary.
For starters: I don't insist that you use your real name when posting comments. Pseudonyms or anonymous handles will get you closer scrutiny by the moderators, because they are frequently used by trolls, but there are legitimate reasons for not wanting to use your true name on the internet. However you should use a pseudonym other than "anonymous" because all comments posted by "anonymous" go straight in the spam bin. Which is so full-to-overflowing that nobody bothers to check it for misplaced ham these days. NB: calling yourself "a. n. onymouse" (or variations thereon) will work fine.
For seconds: a huge amount of spam relates to three categories: (a) dodgy financial assistance (loans, credit, etc), (b) luxury designer brands (you would not believe the number of spammers who seem to think you all want to buy cheap Karen Millen dresses and Gucci handbags), and (c) prescription medication (Cialis, Viagra, you name it, they want to sell it to you). If you want to refer to these medicines or high-end designer brands in a comment, mangle the spelling slightly. Stick a space or a punctuation character in it. (I feel safe telling you to do this here because the spammers, almost by definition, aren't part of the conversation and won't read these helpful tips).
Thirdly: if you post something and it vanishes into the moderation black hole, feel free to post another comment saying "Moderator HELP!". We'll look for it. (Please bear in mind, though, that we may well live in a different time zone from you and be in bed at the time. And this is not the New York Times, with a paid staff on 24x7 duty.)
Finally: as noted here, this blog doesn't take advertising (because it is an advert). However, I won't snarl at you if, in the course of a discussion you post a recommendation or a link to some commercial product or service that may interest other readers as long as you have no financial interest in the product. Found something that you like using and want to share it? That's fine. Taking revenue from click-throughs or otherwise boosting the noise level for purposes of search engine optimization? That's not cool. Not sure whether what you want to push is okay? Just ask.