The C905 is a totally awesome phone that covers what you need but the the video uploading will be a bit restrictive as it's a feature phone. It also suffers from some reliability faults, but my mate has had his earphone fixed and still loves it. The camera particularly.
However, I would take a look at the Nokia's with xenon flash, they take very good pictures and play music fine but as they are smart phones they may also offer you an easier way to upload pics. The C905 also has to have an adapter to use 3.5mm headphones, Nokia's mostly don't these day's. If your a face book addict then take a look at the N97. It lacks a xenon flash but has the usual Nokia Karl Zeis lens and 5mpx snapper the same as the N85 plus has a full touch screen and flip out qwerty keyboard, it also has widgets support so you can have a Facebook and You Tube widget on the front screen you access with a touch.
The reviews say it's not a perfect device but I guess it depends how addicted to YT and FB you are?

Otherwise the N86 cause it's newer?
It is a tough one, the C905 is an awesome device, just has reliability issues, but if your going to blog a lot, then the N97 may be better cause of it's keyboard?