I’ve done it. For me it was a way of saying goodbye and sharing an anecdote or two that his other friends might smile about. It is also a way for me to show his mum, dad, sister, brother in law (people I have never met) how much he meant to me.
One of his other friends posts daily on his page. I guess, for her, it’s cathartic.
You also have to remember that the world has changed and the way we communicate has changed. I found it difficult to look at my friends page because his electronic footprint was still there and I guess it made it more vivid that, for some, one minute you’re there and the next thing you’re gone.
It’s no different to messages in the paper or threads on here saying RIP and the such.