Hi i heard that google put some kind of filter for a new blogs at blogspot to stop spam blogs ? is it true ? If i will write unique content i will be able to get traffic instantly ? or i need time to get out from that filter ?
I have not heard that, I am not sure how they could filter it anyway. It's a pretty blurred line between spam and some peoples actual content.
Never heard of that, as I don't find any reason for new blogs being discrimminated by Google. Back links are what a blog needs, no matter the age of the blog is.
If you keep your site updated with good original content, you should have to worry about being labeled a spam blog. That said, I've had my site tagged as 'spam' and simply had to follow the instructions received in the email to get it unlocked. I had no problem.
If all you are going to do is autoblog, or rehash already written content, then yes, you will have some problems...but if you write original content...you have to go through the same steps as everyone else, but you should be fine. I do agree, your own domain is better...I hardly ever see blogger subdomains in the tops of the serps anymore (except for the the one that keeps out ranking me...but it is also 4 years old too)..but it probably just depends on the niche....I'm probably not searching for things that blogger blogs are ranking for.