What is do follow in building backlinks

I know backlinks can drive you a lot of traffic. I admit that I'm new with this game and I've encountered another terminology like do follow backlinks from other fellow bloggers. I can't relate on this. Can someone explain what is do follow?

Good affiliates aside from adsense

I recently received a bad news from adsense. My account got banned. I now trying to appeal to get back my adsense. I decided to find alternative affiliates while waiting but I don't know what are the great affiliates aside from adsense. Is there any?

How to shorten your url

I always use twitter and I'm a fan of it. I am wondering how does twitter make shorter links. I am wondering if I can use this technique to shorten my links when promoting my blog. Is there a technique or a step to make this?

In which version of Firefox an InFormEnter will be installed?  What are the benefits of it ?

In what aspect would it be possible to hold the software producers liable for their software products released to the public when those products are considered like books are, regardless of the physical or economic harm that may results from using it?

I am uploading image content in my blog using my FTP FileZilla client. It was very helpful since the transferring process is fast and you can upload pictures in bulk. But when I logged out and then tried to logged in the other day, I was able to log in my FileZilla but an error message "Can't open data connection” appears. Then an error message Failed to retrieve directory listing also appears. After that, my connection was closed by the server.

I use my FileZilla on my customized website generated through custom-made CMS. What can I do to prevent this error?

I am a professional freelancer. So, most of the time I have to work on internet.  Sometimes, a message appeared  ‘send error report’ & ‘don’t send’.  If I click don’t send internet connection (Internet modem) is disconnected. In this  circumstances what should I do?

How the problem can be solved?

I have 3 browsers on my PC (Windows 7): Firefox, Internet Explorer and Google Chrome. I can't browse with Firefox.

I need to know what are the main applications that are used in cloud computing and how they work on it.what are the commecial advantages of usage in cloud computing?who uses them?

I have a blog name www. (webin coming) . blogspot.com. While visiting my blog I saw my blog is being redirected to another URL ‘http://contributor.yahoo.com/user/707315/anisur_rahman.html’.

I did not redirected my blog. But, my blog had a link to my contributor profile. I deleted this link afterwards.

There is no reason to infiltrate as this blog is redirected to my own contributor profile.

I did not find any part of redirected URL present on HTML page of my blog. I sought answer of this problem. But I did not find.

At last, I deleted my blog. And I opened a new blog with the same address and copied all contents to new blog.

I suffered much. I am still anxious about the former problem.