Sorry for unapproving all recent comments!
Sorry guys!
This blog gets about 2000 spam comments each month. I found it impossible to screen all of them to approve few real comments. In particular this seems to take more and more time since recent spam messages look like real messages instead of just collections of hyperlinks to porn sites.
So I removed all 3700+ comments waiting for moderation. I will probably not be able to screen the comments any better in the future. My intention is not to censor your comments. I just have better ways to spend my spare time than by reading all kind of junk sent by bots.
To get your comments approved you should include something that gets my attention in less than a second. Something that shows that the comment has been written by some human being who knows what he/she is talking about. Comments that have no interesting keywords in them are likely to be ignored. Also comments that have hypertext links will probably get deleted unless there is something else that raises my attention. You need to say something that shows that you are talking about the subject of this blog, it’s scope or it’s competitors.