Different Gmail Accounts and UserNames

Hey W'dup...

I'm about to get started with traffic geyser and I need to set up
all of my profiles to about 40 different video, social bookmarking
and blog sites.

I want to only have to do this once (per niche). Should I (do I need to)
create different usernames AND emails for each one. Would that
be wise or that's no necessary?

I saw in JVMarkets thread that he said that:

Right now it's one email/profile per niche....

Click to expand...

But I don't want to leave "footprints" all around the net. What'
ch'all think?