because you didn't post the link
http://www.(your tumblr account).tumblr.com
Have the password or have them follow you
you can. there is a link that says view profile on the page with their request
in settings.
There are no profile pictures on tumblr, only icons. Some themes allow you to upload an image on the sidebar though.
Basically it is like this tumblrname.tumblr.com :) For example mine is Mirthfulmermaid.tumblr.com another way is go to Tumblr.com Then right on the panel that say "text, picture, post" stuff, to the left is the little profile picture of you. Click that and BAM your tumblr :)
you cant
in settings on your dash.
you could download an app called "opera mini" which gives you the option to browse tumblr mobile or standard view. for more help you could go to my tumblr (inspiringlovato.tumblr.com)
You probably need the newer iPod to get on facebook or more memory.
If you only want one post per page on your Tumblr profile you go: Customize->Advanced->Change the 'post count' drop down bar number to '1'
well if you're on iphone you go under your profile where it shoes your posts and follower count and then you press your profile picture!