The best way to contact me is usually by email. Is that old-fashioned? Maybe so, but then I (along with the internet) may be becoming middle-aged. My email address is frank at pennycook dot net. I will do my best to reply. If your subject line is descriptive that will help a lot.
If you have a comment on anything I've written on one of my blogs then you could use the comment feature. I do read the comments and may respond, but even if not then it is good to have received feedback or read some thoughts which my post may have sparked off. Do note that due to the high levels of comment spam all comments are subject to moderation and/or may require signing in. If you have any trouble with a genuine comment that has not been accepted or you find it inconvenient to place your comment then please do email me with details of the problem.
I have an office landline number which can be found through directory enquiry services. You can leave a message there, I try to respond within a week or so (why not consider emailing me instead?). If you know my mobile number it is far quicker to reach me using that, but I'm not going to publish it here.