Well at least you tried it before deciding that, quite possibly, you couldn’t be bothered. I just can’t be a*sed full-stop, which I admit is pretty reactionary! There ain’t enough time in the world!
As for standardisation, as you point out, there are overlaps with existing technologies and habits, and such tools will doubtless find their niche as people establish for themselves what they can or can’t do that’s useful to them. I guess that standardising modes of use could be helpful as part of a technological standardisation that would enable various apps of this sort to work together and to establish what sort of interface etc. the user needs, according to mode. Applications themselves might specialise and either not work with certain modes, or adapt themselves according to context. Asking users to do anything much explicitly in terms of declaring their mode may not, as you say, fit that well with the lifestreaming approach. But hey, I’ve never tried it so I’m just talking, again!