Personally, I like MULTIPLY for running 'deeper stuff' (whether it's writings or pictures or even reviews), because only those that are looking for specific things seem to come to my multiply site.I use multiply as expression of thoughts but also to stir others (christians or non-christians)to 'remember' God. It is also very practical and easy to use for me. WordPress is more complicated technically and often it gets jammed for some reasons. Facebook is more frivolous ra ra ra...yahooing...or catching up with one's youth..so I use FB to touch base with those faraway.
but it's fun too. But Multiply is my homebase. It's up to you which type of site suits you.
All the best choosing (just choose all, each for different purpose)>
