Bins, Recycling and Security

I think the council is listening. This is a shock to many, and not least of all me! They have decided to start recycling and issuing different coloured bins with rules and things. Here have a look:

On a different note I have been toying with the idea of placing a sidebar with "What I am doing now" sort of thing as I have found that google calendar does this funky embedded thang. Anyhoo it would aid those people who would like to know what I will be doing in a few days/weeks to come. I have it tested:

What I need to know is; does it pose a security threat. Realistically does anybody know where I live who also knows to look on my website for my working patterns which could then point to the times when the house is empty. Please comment and let me know if you think it'd be useful to you or not.