Your postings are often highly educational. I, for one, value the services of LAS more so as a result. Loads of people at my workplace know about my journal. But it represents no issues at all for me - as it is not primarily about my work or my employer. But where my "work" and my "interests" converge - I would have no hesitation about posting. My employer does not "own" my "interests" - they benefit from it. In a similar way - your work "crosses over" into your interests - and it motivates you enought to write about it - and share it with people like me - who are not here because of your employer. Hence - your employer cannot claim ownership of your interests. But your employer can surely only benefit from them - in more ways that one.