As far as being penalized if you build links too fast, you'd have to have HUNDREDS OF THOUSANDS of the same kind of links to have that happen. "Natural Linkbuilding" happens every day. How many links do you think I'd get TODAY if I had some sort of breaking news about the new US President Obama? What if I knew something about his background that no one else knew? I guarantee you, I'd get THOUSANDS. The Drudge Report was "put on the map" the day he broke the news that President Clinton was having an indiscretion with a young intern named Monica Lewinsky. Not only did HUNDREDS of thousands of other sites link back to him that day, but many of them were NOT in the same niche. This is natural and expected by Google. What is NOT natural is building THOUSANDS and THOUSANDS of links all in the same niche in one day. Then, you might be removed. But unless you are doing that, you have nothing to worry about. Remember, people always recommend that you have SUCH "great content" that other sites will want to link back to you. If you do have that great content, how are YOU going to control how many people a day link back to you? You can't. Google knows and understands that.
I usually thinks like this. If it was bad to get many links at the same time and if you could get penalized for it, then why not bring down your competition by crating thousands of links for them? The only way I think that links could harm your site is if you got thousands of links from well known spam sites. Also if they are from blog comments or similar and all the comments are exactly the same. It's usually a sign of using automated software to build backlinks.
I always believe that "Natural Linkbuilding" is best choice for you who want to get great site . it wil make google trust with our site
same with you quickly build backlinks is very wrong consistency in building backlinks is the key to success
i usually make a schedule to build backlink, don't add ton of backlink in one time, that can make your site sanboxed by google.
yaa i do agree with you because if you have done enough R&D for your website and according to that you make your own plan even more important you need to track your work as well
few other factors that count - site age - trafffic trend - bounce rate - link anchor text should be related BUT different - deep linking