It is one of a series from a US outfit called 'Knock, knock' which seemingly has nothing to do with a sacred Irish shrine of the same name.
After a rather grumpy week of blogs I am happy to plug one by a guy who has clearly done his homework, gets just about everything right and totally deserves his success. As he is based in Ashford and I am in Margate we have never met and probably never will.
His name is Richard Torble and you can find his excellent website at www.richardtorblephotography.com/blog/
DO please take a look, even if you are not into needing photography. Richard's site [and especially his blog]demonstrates PR principles that can be used by any business.
If you want to learn about the business of a self employed professional without all the technical malarkey ... then spend the next inclement weather day lost in admiration for all Richard's blog entries.